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98-443: Choreography is the art or practice of designing sequences of movements of physical bodies (or their depictions) in which motion or form or both are specified. Choreography may also refer to the design itself. A choreographer is one who creates choreographies by practising the art of choreography, a process known as choreographing . It most commonly refers to dance choreography . In dance, choreography. may also refer to

196-438: A n ) n = − ∞ ∞ {\textstyle {(a_{n})}_{n=-\infty }^{\infty }} is a bi-infinite sequence , and can also be written as ( … , a − 1 , a 0 , a 1 , a 2 , … ) {\textstyle (\ldots ,a_{-1},a_{0},a_{1},a_{2},\ldots )} . In cases where

294-464: A n ) . {\textstyle (a_{n}).} Here A is the domain, or index set, of the sequence. Sequences and their limits (see below) are important concepts for studying topological spaces. An important generalization of sequences is the concept of nets . A net is a function from a (possibly uncountable ) directed set to a topological space. The notational conventions for sequences normally apply to nets as well. The length of

392-429: A coherent whole.” Choreography consisting of ordinary motor activities, social dances, commonplace movements or gestures, or athletic movements may lack a sufficient amount of authorship to qualify for copyright protection. A recent lawsuit was brought by professional dancer and choreographer Kyle Hanagami, who sued Epic Games, alleging that the video game developer copied a portion of Hanagami’s copyrighted dance moves in

490-663: A distance from L {\displaystyle L} less than d {\displaystyle d} . For example, the sequence a n = n + 1 2 n 2 {\textstyle a_{n}={\frac {n+1}{2n^{2}}}} shown to the right converges to the value 0. On the other hand, the sequences b n = n 3 {\textstyle b_{n}=n^{3}} (which begins 1, 8, 27, ...) and c n = ( − 1 ) n {\displaystyle c_{n}=(-1)^{n}} (which begins −1, 1, −1, 1, ...) are both divergent. If

588-599: A function of n . Nevertheless, holonomic sequences play an important role in various areas of mathematics. For example, many special functions have a Taylor series whose sequence of coefficients is holonomic. The use of the recurrence relation allows a fast computation of values of such special functions. Not all sequences can be specified by a recurrence relation. An example is the sequence of prime numbers in their natural order (2, 3, 5, 7, 11, 13, 17, ...). There are many different notions of sequences in mathematics, some of which ( e.g. , exact sequence ) are not covered by

686-408: A high art form instead of merely entertainment, she strove to connect emotions and movement: "I spent long days and nights in the studio seeking that dance which might be the divine expression of the human spirit through the medium of the body's movement." She believed dance was meant to encircle all that life had to offer—joy and sadness. Duncan took inspiration from ancient Greece and combined it with

784-416: A limit if the elements of the sequence become closer and closer to some value L {\displaystyle L} (called the limit of the sequence), and they become and remain arbitrarily close to L {\displaystyle L} , meaning that given a real number d {\displaystyle d} greater than zero, all but a finite number of the elements of the sequence have

882-664: A memoir of her experiences with Duncan. In 1911, the French fashion designer Paul Poiret rented a mansion – Pavillon du Butard in La Celle-Saint-Cloud  – and threw lavish parties, including one of the more famous grandes fêtes , La fête de Bacchus on June 20, 1912, re-creating the Bacchanalia hosted by Louis XIV at Versailles. Isadora Duncan, wearing a Greek evening gown designed by Poiret, danced on tables among 300 guests; 900 bottles of champagne were consumed until

980-483: A natural number N {\displaystyle N} such that for all n ≥ N {\displaystyle n\geq N} we have If ( a n ) {\displaystyle (a_{n})} is a sequence of complex numbers rather than a sequence of real numbers, this last formula can still be used to define convergence, with the provision that | ⋅ | {\displaystyle |\cdot |} denotes

1078-498: A passion for freedom of movement. This is exemplified in her revolutionary costume of a white Greek tunic and bare feet. Inspired by Greek forms, her tunics also allowed a freedom of movement that corseted ballet costumes and pointe shoes did not. Costumes were not the only inspiration Duncan took from Greece: she was also inspired by ancient Greek art , and utilized some of its forms in her movement (as shown on photos). Duncan bore three children, all out of wedlock. Deirdre Beatrice

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1176-415: A recurrence relation is Recamán's sequence , defined by the recurrence relation with initial term a 0 = 0. {\displaystyle a_{0}=0.} A linear recurrence with constant coefficients is a recurrence relation of the form where c 0 , … , c k {\displaystyle c_{0},\dots ,c_{k}} are constants . There

1274-440: A sequence converges, then the value it converges to is unique. This value is called the limit of the sequence. The limit of a convergent sequence ( a n ) {\displaystyle (a_{n})} is normally denoted lim n → ∞ a n {\textstyle \lim _{n\to \infty }a_{n}} . If ( a n ) {\displaystyle (a_{n})}

1372-404: A sequence is defined as the number of terms in the sequence. A sequence of a finite length n is also called an n -tuple . Finite sequences include the empty sequence  ( ) that has no elements. Normally, the term infinite sequence refers to a sequence that is infinite in one direction, and finite in the other—the sequence has a first element, but no final element. Such a sequence

1470-466: A sequence is often denoted by letters in the form of a n {\displaystyle a_{n}} , b n {\displaystyle b_{n}} and c n {\displaystyle c_{n}} , where the subscript n refers to the n th element of the sequence; for example, the n th element of the Fibonacci sequence F {\displaystyle F}

1568-409: A sequence of integers whose pattern can be easily inferred. In these cases, the index set may be implied by a listing of the first few abstract elements. For instance, the sequence of squares of odd numbers could be denoted in any of the following ways. Moreover, the subscripts and superscripts could have been left off in the third, fourth, and fifth notations, if the indexing set was understood to be

1666-450: A sequence of sequences: ( ( a m , n ) n ∈ N ) m ∈ N {\textstyle ((a_{m,n})_{n\in \mathbb {N} })_{m\in \mathbb {N} }} denotes a sequence whose m th term is the sequence ( a m , n ) n ∈ N {\textstyle (a_{m,n})_{n\in \mathbb {N} }} . An alternative to writing

1764-475: A son on August 13, 1914, but he died shortly after birth. When Duncan stayed at the Viareggio seaside resort with Eleonora Duse, Duse had just left a relationship with the rebellious and epicene young feminist Lina Poletti . This fueled speculation as to the nature of Duncan and Duse's relationship, but there has never been any indication that the two were involved romantically. Duncan was loving by nature and

1862-668: A studio, allowing her to develop her work and create larger performances for the stage. From London, she traveled to Paris, where she was inspired by the Louvre and the Exposition Universelle of 1900 and danced in the salons of Marguerite de Saint-Marceaux and Princesse Edmond de Polignac . In France, as elsewhere, Duncan delighted her audience. In 1902, Loie Fuller invited Duncan to tour with her. This took Duncan all over Europe as she created new works using her innovative technique, which emphasized natural movement in contrast to

1960-492: A tragic death at Nice on the Riviera ". "According to dispatches from Nice, Duncan was hurled in an extraordinary manner from an open automobile in which she was riding and instantly killed by the force of her fall to the stone pavement." Other sources noted that she was almost decapitated by the sudden tightening of the scarf around her neck. The accident gave rise to Gertrude Stein 's remark that "affectations can be dangerous". At

2058-413: A tryst. Her silk scarf, draped around her neck, became entangled in the wheel well around the open-spoked wheels and rear axle, pulling her from the open car and breaking her neck. Desti said she called out to warn Duncan about the scarf almost immediately after the car left. Desti took Duncan to the hospital, where she was pronounced dead. As The New York Times noted in its obituary, Duncan "met

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2156-565: Is monotonically decreasing if each consecutive term is less than or equal to the previous one, and is strictly monotonically decreasing if each is strictly less than the previous. If a sequence is either increasing or decreasing it is called a monotone sequence. This is a special case of the more general notion of a monotonic function . The terms nondecreasing and nonincreasing are often used in place of increasing and decreasing in order to avoid any possible confusion with strictly increasing and strictly decreasing , respectively. If

2254-474: Is a divergent sequence, then the expression lim n → ∞ a n {\textstyle \lim _{n\to \infty }a_{n}} is meaningless. A sequence of real numbers ( a n ) {\displaystyle (a_{n})} converges to a real number L {\displaystyle L} if, for all ε > 0 {\displaystyle \varepsilon >0} , there exists

2352-463: Is a general method for expressing the general term a n {\displaystyle a_{n}} of such a sequence as a function of n ; see Linear recurrence . In the case of the Fibonacci sequence, one has c 0 = 0 , c 1 = c 2 = 1 , {\displaystyle c_{0}=0,c_{1}=c_{2}=1,} and the resulting function of n

2450-411: Is a simple classical example, defined by the recurrence relation with initial terms a 0 = 0 {\displaystyle a_{0}=0} and a 1 = 1 {\displaystyle a_{1}=1} . From this, a simple computation shows that the first ten terms of this sequence are 0, 1, 1, 2, 3, 5, 8, 13, 21, and 34. A complicated example of a sequence defined by

2548-401: Is a strictly increasing sequence of positive integers. Some other types of sequences that are easy to define include: An important property of a sequence is convergence . If a sequence converges, it converges to a particular value known as the limit . If a sequence converges to some limit, then it is convergent . A sequence that does not converge is divergent . Informally, a sequence has

2646-404: Is a valid sequence. Sequences can be finite , as in these examples, or infinite , such as the sequence of all even positive integers (2, 4, 6, ...). The position of an element in a sequence is its rank or index ; it is the natural number for which the element is the image. The first element has index 0 or 1, depending on the context or a specific convention. In mathematical analysis ,

2744-464: Is bi-infinite. This sequence could be denoted ( 2 n ) n = − ∞ ∞ {\textstyle {(2n)}_{n=-\infty }^{\infty }} . A sequence is said to be monotonically increasing if each term is greater than or equal to the one before it. For example, the sequence ( a n ) n = 1 ∞ {\textstyle {(a_{n})}_{n=1}^{\infty }}

2842-409: Is called a lower bound . If a sequence is both bounded from above and bounded from below, then the sequence is said to be bounded . A subsequence of a given sequence is a sequence formed from the given sequence by deleting some of the elements without disturbing the relative positions of the remaining elements. For instance, the sequence of positive even integers (2, 4, 6, ...) is a subsequence of

2940-465: Is called a singly infinite sequence or a one-sided infinite sequence when disambiguation is necessary. In contrast, a sequence that is infinite in both directions—i.e. that has neither a first nor a final element—is called a bi-infinite sequence , two-way infinite sequence , or doubly infinite sequence . A function from the set Z of all integers into a set, such as for instance the sequence of all even integers ( ..., −4, −2, 0, 2, 4, 6, 8, ... ),

3038-418: Is called an index , and the set of values that it can take is called the index set . It is often useful to combine this notation with the technique of treating the elements of a sequence as individual variables. This yields expressions like ( a n ) n ∈ N {\textstyle (a_{n})_{n\in \mathbb {N} }} , which denotes a sequence whose n th element

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3136-677: Is commonly believed. Nevertheless, three of them (Irma, Anna and Lisa) would use the Duncan surname for the rest of their lives. After about a decade in Berlin, Duncan established a school in Paris that soon closed because of the outbreak of World War I . In 1914, Duncan moved to the United States and transferred her school there. A townhouse on Gramercy Park in New York was provided for its use, and its studio

3234-416: Is easily discernible by inspection. Other examples are sequences of functions , whose elements are functions instead of numbers. The On-Line Encyclopedia of Integer Sequences comprises a large list of examples of integer sequences. Other notations can be useful for sequences whose pattern cannot be easily guessed or for sequences that do not have a pattern such as the digits of π . One such notation

3332-448: Is generally denoted as F n {\displaystyle F_{n}} . In computing and computer science , finite sequences are usually called strings , words or lists , with the specific technical term chosen depending on the type of object the sequence enumerates and the different ways to represent the sequence in computer memory . Infinite sequences are called streams . The empty sequence ( )

3430-406: Is given by Binet's formula . A holonomic sequence is a sequence defined by a recurrence relation of the form where c 1 , … , c k {\displaystyle c_{1},\dots ,c_{k}} are polynomials in n . For most holonomic sequences, there is no explicit formula for expressing a n {\displaystyle a_{n}} as

3528-503: Is given by the variable a n {\displaystyle a_{n}} . For example: One can consider multiple sequences at the same time by using different variables; e.g. ( b n ) n ∈ N {\textstyle (b_{n})_{n\in \mathbb {N} }} could be a different sequence than ( a n ) n ∈ N {\textstyle (a_{n})_{n\in \mathbb {N} }} . One can even consider

3626-431: Is in contrast to the definition of sequences of elements as functions of their positions. To define a sequence by recursion, one needs a rule, called recurrence relation to construct each element in terms of the ones before it. In addition, enough initial elements must be provided so that all subsequent elements of the sequence can be computed by successive applications of the recurrence relation. The Fibonacci sequence

3724-567: Is included in most notions of sequence. It may be excluded depending on the context. A sequence can be thought of as a list of elements with a particular order. Sequences are useful in a number of mathematical disciplines for studying functions , spaces , and other mathematical structures using the convergence properties of sequences. In particular, sequences are the basis for series , which are important in differential equations and analysis . Sequences are also of interest in their own right, and can be studied as patterns or puzzles, such as in

3822-448: Is known as "The Mother of Dance". While her schools in Europe did not last long, Duncan's work had an impact on the art and her style is still danced based upon the instruction of Maria-Theresa Duncan , Anna Duncan, and Irma Duncan, three of her six pupils. Through her sister, Elizabeth, Duncan's approach was adopted by Jarmila Jeřábková from Prague where her legacy persists. By 1913 she

3920-490: Is magical consciousness – with which she suits the action to the melody." Crowley was, in fact, more attracted to Duncan's bohemian companion Mary Dempsey ( a.k.a. Mary D'Este or Desti), with whom he had an affair. Desti had come to Paris in 1901 where she soon met Duncan, and the two became inseparable. Desti, who also appeared in Moonchild (as "Lisa la Giuffria") and became a member of Crowley's occult order, later wrote

4018-404: Is monotonically increasing if and only if a n + 1 ≥ a n {\textstyle a_{n+1}\geq a_{n}} for all n ∈ N . {\displaystyle n\in \mathbf {N} .} If each consecutive term is strictly greater than (>) the previous term then the sequence is called strictly monotonically increasing . A sequence

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4116-533: Is most useful for customary infinite sequences which can be easily recognized from their first few elements. Other ways of denoting a sequence are discussed after the examples. The prime numbers are the natural numbers greater than 1 that have no divisors but 1 and themselves. Taking these in their natural order gives the sequence (2, 3, 5, 7, 11, 13, 17, ...). The prime numbers are widely used in mathematics , particularly in number theory where many results related to them exist. The Fibonacci numbers comprise

4214-500: Is replaced by the expression dist ⁡ ( a n , L ) {\displaystyle \operatorname {dist} (a_{n},L)} , which denotes the distance between a n {\displaystyle a_{n}} and L {\displaystyle L} . If ( a n ) {\displaystyle (a_{n})} and ( b n ) {\displaystyle (b_{n})} are convergent sequences, then

4312-805: Is the longest-running choreography competition in the world (started c.  1982 ), organised by the Ballett Gesellschaft Hannover e.V. It took place online during the COVID-19 pandemic in 2020 and 2021, returning to the stage at the Theater am Aegi in 2022. Gregor Zöllig, head choreographer of dance at the Staatstheater Braunschweig was appointed artistic director of the competition in 2020. The main conditions of entry are that entrants must be under 40 years of age, and professionally trained. The competition has been run in collaboration with

4410-568: Is to write down a general formula for computing the n th term as a function of n , enclose it in parentheses, and include a subscript indicating the set of values that n can take. For example, in this notation the sequence of even numbers could be written as ( 2 n ) n ∈ N {\textstyle (2n)_{n\in \mathbb {N} }} . The sequence of squares could be written as ( n 2 ) n ∈ N {\textstyle (n^{2})_{n\in \mathbb {N} }} . The variable n

4508-536: Is used to design dances that are intended to be performed as concert dance . The art of choreography involves the specification of human movement and form in terms of space, shape, time and energy, typically within an emotional or non-literal context. Movement language is taken from the dance techniques of ballet , contemporary dance , jazz dance , hip hop dance , folk dance , techno , K-pop , religious dance, pedestrian movement, or combinations of these. The word choreography literally means "dance-writing" from

4606-592: The Tanja Liedtke Foundation since her death in 2008, and from 2021 a new production prize has been awarded by the foundation, to complement the five other production awards. The 2021 and 2022 awards were presented by Marco Goecke , then director of ballet at the Staatstheater Hannover . There are a number of other international choreography competitions, mostly focused on modern dance. These include: The International Online Dance Competition (IODC)

4704-441: The codomain of the sequence is fixed by context, for example by requiring it to be the set R of real numbers, the set C of complex numbers, or a topological space . Although sequences are a type of function, they are usually distinguished notationally from functions in that the input is written as a subscript rather than in parentheses, that is, a n rather than a ( n ) . There are terminological differences as well:

4802-430: The design itself, which is sometimes expressed by means of dance notation . Dance choreography is sometimes called dance composition . Aspects of dance choreography include the compositional use of organic unity , rhythmic or non-rhythmic articulation, theme and variation, and repetition. The choreographic process may employ improvisation for the purpose of developing innovative movement ideas. In general, choreography

4900-411: The limit of a sequence of rational numbers (e.g. via its decimal expansion , also see completeness of the real numbers ). As another example, π is the limit of the sequence (3, 3.1, 3.14, 3.141, 3.1415, ...), which is increasing. A related sequence is the sequence of decimal digits of π , that is, (3, 1, 4, 1, 5, 9, ...). Unlike the preceding sequence, this sequence does not have any pattern that

4998-420: The natural numbers . In the second and third bullets, there is a well-defined sequence ( a k ) k = 1 ∞ {\textstyle {(a_{k})}_{k=1}^{\infty }} , but it is not the same as the sequence denoted by the expression. Sequences whose elements are related to the previous elements in a straightforward way are often defined using recursion . This

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5096-498: The solar plexus . Duncan placed an emphasis on "evolutionary" dance motion, insisting that each movement was born from the one that preceded it, that each movement gave rise to the next, and so on in organic succession. It is this philosophy and new dance technique that garnered Duncan the title of the creator of modern dance. Duncan's philosophy of dance moved away from rigid ballet technique and towards what she perceived as natural movement. She said that in order to restore dance to

5194-1242: The 19th century, and romantic ballet choreographers included Carlo Blasis , August Bournonville , Jules Perrot and Marius Petipa . Modern dance brought a new, more naturalistic style of choreography, including by Russian choreographer Michel Fokine (1880-1942) and Isadora Duncan (1878-1927), and since then styles have varied between realistic representation and abstraction. Merce Cunningham , George Balanchine , and Sir Frederick Ashton were all influential choreographers of classical or abstract dance, but Balanchine and Ashton, along with Martha Graham , Leonide Massine , Jerome Robbins and others also created representational works. Isadora Duncan loved natural movement and improvisation . The work of Alvin Ailey (1931-1989), an African-American dancer, choreographer, and activist, spanned many styles of dance, including ballet, jazz , modern dance, and theatre. Dances are designed by applying one or both of these fundamental choreographic methods: Several underlying techniques are commonly used in choreography for two or more dancers: Movements may be characterized by dynamics, such as fast, slow, hard, soft, long, and short. Today,

5292-632: The British passenger steamer SS Mohegan ran aground off the coast of Cornwall . After her parents' divorce, Isadora's mother moved with her family to Oakland, California , where she worked as a seamstress and piano teacher. Isadora attended school from the ages of six to ten, but she dropped out, having found it constricting. She and her three siblings earned money by teaching dance to local children. In 1896, Duncan became part of Augustin Daly 's theater company in New York, but she soon became disillusioned with

5390-545: The Greek island of Corfu with her brother and sister, then several weeks at the Viareggio seaside resort in Italy with actress Eleonora Duse . In her autobiography, Duncan relates that in her deep despair over the deaths of her children, she begged a young Italian stranger, the sculptor Romano Romanelli , to sleep with her because she was desperate for another child. She gave birth to

5488-516: The Greek words "χορεία" (circular dance, see choreia ) and "γραφή" (writing). It first appeared in the American English dictionary in the 1950s, and "choreographer" was first used as a credit for George Balanchine in the Broadway show On Your Toes in 1936. Before this, stage credits and movie credits used phrases such as "ensembles staged by", "dances staged by", or simply "dances by" to denote

5586-579: The U.S., and Soviet Russia from the age of 22. She died when her scarf became entangled in the wheel and axle of the car in which she was travelling in Nice , France. Angela Isadora Duncan was born in San Francisco, the youngest of the four children of Joseph Charles Duncan (1819–1898), a banker, mining engineer and connoisseur of the arts, and Mary Isadora Gray (1849–1922). Her brothers were Augustin Duncan and Raymond Duncan ; her sister, Elizabeth Duncan ,

5684-638: The West and leave the school to her protégée Irma. In 1924, Duncan composed a dance routine called Varshavianka to the tune of the Polish revolutionary song known in English as Whirlwinds of Danger . Breaking with convention, Duncan imagined she had traced dance to its roots as a sacred art. She developed from this notion a style of free and natural movements inspired by the classical Greek arts, folk dances, social dances, nature, and natural forces, as well as an approach to

5782-715: The aesthetic and pedagogical principles of Isadora's work in New York and Paris. Choreographer and dancer Julia Levien was also instrumental in furthering Duncan's work through the formation of the Duncan Dance Guild in the 1950s and the establishment of the Duncan Centenary Company in 1977. Another means by which Duncan's dance techniques were carried forth was in the formation of the Isadora Duncan Heritage Society, by Mignon Garland, who had been taught dance by two of Duncan's key students. Garland

5880-409: The choreographer. In Renaissance Italy , dance masters created movements for social dances which were taught, while staged ballets were created in a similar way. In 16th century France, French court dances were developed in an artistic pattern. In the 17th and 18th centuries, social dance became more separated from theatrical dance performances. During this time the word choreography was applied to

5978-539: The cold weather, but she would agree to wear only the scarf. As they departed, she reportedly said to Desti and some companions, " Adieu, mes amis. Je vais à la gloire! " ("Farewell, my friends. I go to glory!"); but according to the American novelist Glenway Wescott , Desti later told him that Duncan's actual parting words were, "Je vais à l'amour" ("I am off to love"). Desti considered this embarrassing, as it suggested that she and Falchetto were going to her hotel for

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6076-441: The complex modulus, i.e. | z | = z ∗ z {\displaystyle |z|={\sqrt {z^{*}z}}} . If ( a n ) {\displaystyle (a_{n})} is a sequence of points in a metric space , then the formula can be used to define convergence, if the expression | a n − L | {\displaystyle |a_{n}-L|}

6174-404: The copyright claims after the district court concluded that his two-second, four-beat sequence of dance steps was not protectable under copyright law. Sequence For example, (M, A, R, Y) is a sequence of letters with the letter "M" first and "Y" last. This sequence differs from (A, R, M, Y). Also, the sequence (1, 1, 2, 3, 5, 8), which contains the number 1 at two different positions,

6272-432: The definitions and notations introduced below. In this article, a sequence is formally defined as a function whose domain is an interval of integers . This definition covers several different uses of the word "sequence", including one-sided infinite sequences, bi-infinite sequences, and finite sequences (see below for definitions of these kinds of sequences). However, many authors use a narrower definition by requiring

6370-697: The domain of a sequence in the subscript is to indicate the range of values that the index can take by listing its highest and lowest legal values. For example, the notation ( k 2 ) ) k = 1 10 {\textstyle (k^{2}){\vphantom {)}}_{k=1}^{10}} denotes the ten-term sequence of squares ( 1 , 4 , 9 , … , 100 ) {\displaystyle (1,4,9,\ldots ,100)} . The limits ∞ {\displaystyle \infty } and − ∞ {\displaystyle -\infty } are allowed, but they do not represent valid values for

6468-433: The domain of a sequence to be the set of natural numbers . This narrower definition has the disadvantage that it rules out finite sequences and bi-infinite sequences, both of which are usually called sequences in standard mathematical practice. Another disadvantage is that, if one removes the first terms of a sequence, one needs reindexing the remainder terms for fitting this definition. In some contexts, to shorten exposition,

6566-535: The end of the world. Wherever you wish." However, the claim of a purported relationship made after Duncan’s death by de Acosta (a controversial figure for her alleged relations) is in dispute. Friends and relatives of Duncan believed her claim is false based on forged letters and done for publicity’s sake. In addition, Lily Dikovskaya, one of Duncan’s students from her Moscow School, wrote in In Isadora’s Steps that Duncan “was focused on higher things”. By

6664-474: The first light of day. Duncan disliked the commercial aspects of public performance, such as touring and contracts, because she felt they distracted her from her real mission, namely the creation of beauty and the education of the young. To achieve her mission, she opened schools to teach young girls her philosophy of dance. The first was established in 1904 in Berlin- Grunewald , Germany. This institution

6762-512: The following limits exist, and can be computed as follows: Isadora Duncan Angela Isadora Duncan (May 26, 1877, or May 27, 1878 – September 14, 1927) was an American-born dancer and choreographer, who was a pioneer of modern contemporary dance and performed to great acclaim throughout Europe and the United States. Born and raised in California, she lived and danced in Western Europe,

6860-552: The form and craved a different environment with less of a hierarchy. Duncan's novel approach to dance had been evident since the classes she had taught as a teenager, where she "followed [her] fantasy and improvised, teaching any pretty thing that came into [her] head". A desire to travel brought her to Chicago, where she auditioned for many theater companies, finally finding a place in Augustin Daly's company. This took her to New York City where her unique vision of dance clashed with

6958-474: The index, only the supremum or infimum of such values, respectively. For example, the sequence ( a n ) n = 1 ∞ {\textstyle {(a_{n})}_{n=1}^{\infty }} is the same as the sequence ( a n ) n ∈ N {\textstyle (a_{n})_{n\in \mathbb {N} }} , and does not contain an additional term "at infinity". The sequence (

7056-434: The integer sequence whose elements are the sum of the previous two elements. The first two elements are either 0 and 1 or 1 and 1 so that the sequence is (0, 1, 1, 2, 3, 5, 8, 13, 21, 34, ...). Other examples of sequences include those made up of rational numbers , real numbers and complex numbers . The sequence (.9, .99, .999, .9999, ...), for instance, approaches the number 1. In fact, every real number can be written as

7154-459: The last years of her life, described her extravagant waywardness. In a reminiscent sketch, Zelda Fitzgerald wrote how she and her husband, author F. Scott Fitzgerald , sat in a Paris cafe watching a somewhat drunken Duncan. He would speak of how memorable it was, but all that Zelda recalled was that while all eyes were watching Duncan, she was able to steal the salt and pepper shakers from the table. On September 14, 1927, in Nice , France, Duncan

7252-517: The late 1920s, Duncan, in her late 40s, was depressed by the deaths of her three young children. She spent her final years financially struggling, moving between Paris and the Mediterranean, running up debts at hotels. Her autobiography My Life was published in 1927 shortly after her death. The Australian composer Percy Grainger called it a "life-enriching masterpiece." In his book Isadora, An Intimate Portrait , Sewell Stokes , who met Duncan in

7350-728: The main rules for choreography are that it must impose some kind of order on the performance, within the three dimensions of space as well the fourth dimension of time and the capabilities of the human body. In the performing arts , choreography applies to human movement and form. In dance , choreography is also known as dance choreography or dance composition. Choreography is also used in a variety of other fields, including opera , cheerleading , theatre , marching band , synchronized swimming , cinematography , ice skating , gymnastics , fashion shows , show choir , cardistry , video game production, and animated art . The International Choreographic Competition Hannover, Hanover , Germany,

7448-458: The new American athleticism which included skipping, running, jumping, leaping, and tossing. Duncan wrote of American dancing: "let them come forth with great strides, leaps and bounds, with lifted forehead and far-spread arms, to dance." Her focus on natural movement emphasized steps, such as skipping, outside of codified ballet technique. Duncan also cited the sea as an early inspiration for her movement, and she believed movement originated from

7546-436: The occultist Aleister Crowley at a party, an episode recounted by Crowley in his Confessions . He refers to Duncan as "Lavinia King", and used the same invented name for her in his 1929 novel Moonchild (written in 1917). Crowley wrote of Duncan that she "has this gift of gesture in a very high degree. Let the reader study her dancing, if possible in private than in public, and learn the superb 'unconsciousness' – which

7644-677: The photographer Arnold Genthe . Duncan had planned to leave the United States in 1915 aboard the RMS Lusitania on its ill-fated voyage, but historians believe her financial situation at the time drove her to choose a more modest crossing. In 1921, Duncan's leftist sympathies took her to the Soviet Union , where she founded a school in Moscow. However, the Soviet government's failure to follow through on promises to support her work caused her to return to

7742-414: The popular game Fortnite. Hanagami published a YouTube video in 2017 featuring a dance he choreographed to the song "How Long" by Charlie Puth, and Hanagami claimed that Fortnight's "It's Complicated" "emote" copied a portion of his "How High" choreography. Hanagami's asserted claims for direct and contributory copyright infringement and unfair competition. Fortnite-maker Epic Games ultimately won dismissal of

7840-540: The popular pantomimes of theater companies. While in New York, Duncan also took some classes with Marie Bonfanti but was quickly disappointed by ballet routine. Feeling unhappy and unappreciated in America, Duncan moved to London in 1898. She performed in the drawing rooms of the wealthy, taking inspiration from the Greek vases and bas-reliefs in the British Museum . The earnings from these engagements enabled her to rent

7938-628: The positive integers (1, 2, 3, ...). The positions of some elements change when other elements are deleted. However, the relative positions are preserved. Formally, a subsequence of the sequence ( a n ) n ∈ N {\displaystyle (a_{n})_{n\in \mathbb {N} }} is any sequence of the form ( a n k ) k ∈ N {\textstyle (a_{n_{k}})_{k\in \mathbb {N} }} , where ( n k ) k ∈ N {\displaystyle (n_{k})_{k\in \mathbb {N} }}

8036-495: The rigidity of traditional ballet. She spent most of the rest of her life touring Europe and the Americas in this fashion. Despite mixed reaction from critics, Duncan became quite popular for her distinctive style and inspired many visual artists, such as Antoine Bourdelle , Dame Laura Knight , Auguste Rodin , Arnold Rönnebeck , André Dunoyer de Segonzac , and Abraham Walkowitz , to create works based on her. In 1910, Duncan met

8134-426: The sequence of real numbers ( a n ) is such that all the terms are less than some real number M , then the sequence is said to be bounded from above . In other words, this means that there exists M such that for all n , a n ≤ M . Any such M is called an upper bound . Likewise, if, for some real m , a n ≥ m for all n greater than some N , then the sequence is bounded from below and any such m

8232-457: The set of indexing numbers is understood, the subscripts and superscripts are often left off. That is, one simply writes ( a k ) {\textstyle (a_{k})} for an arbitrary sequence. Often, the index k is understood to run from 1 to ∞. However, sequences are frequently indexed starting from zero, as in In some cases, the elements of the sequence are related naturally to

8330-493: The study of prime numbers . There are a number of ways to denote a sequence, some of which are more useful for specific types of sequences. One way to specify a sequence is to list all its elements. For example, the first four odd numbers form the sequence (1, 3, 5, 7). This notation is used for infinite sequences as well. For instance, the infinite sequence of positive odd integers is written as (1, 3, 5, 7, ...). Because notating sequences with ellipsis leads to ambiguity, listing

8428-447: The time of her death, Duncan was a Soviet citizen. Her will was the first of a Soviet citizen to undergo probate in the U.S. Duncan was cremated, and her ashes were placed next to those of her children in the columbarium at Père Lachaise Cemetery in Paris. On the headstone of her grave is inscribed École du Ballet de l'Opéra de Paris ("Ballet School of the Opera of Paris"). Duncan

8526-543: The value of a sequence at the lowest input (often 1) is called the "first element" of the sequence, the value at the second smallest input (often 2) is called the "second element", etc. Also, while a function abstracted from its input is usually denoted by a single letter, e.g. f , a sequence abstracted from its input is usually written by a notation such as ( a n ) n ∈ A {\textstyle (a_{n})_{n\in A}} , or just as (

8624-630: The written record of dances, which later became known as dance notation , with the meaning of choreography shifting to its current use as the composition of a sequence of movements making up a dance performance. The ballet master or choreographer during this time became the "arranger of dance as a theatrical art", with one well-known master being of the late 18th century being Jean-Georges Noverre , with others following and developing techniques for specific types of dance, including Gasparo Angiolini , Jean Dauberval , Charles Didelot , and Salvatore Viganò . Ballet eventually developed its own vocabulary in

8722-461: Was a passenger in an Amilcar CGSS automobile owned by Benoît Falchetto  [ fr ] , a French-Italian mechanic. She wore a long, flowing, hand-painted silk scarf, created by the Russian-born artist Roman Chatov , a gift from her friend Mary Desti, the mother of American filmmaker, Preston Sturges . Desti, who saw Duncan off, had asked her to wear a cape in the open-air vehicle because of

8820-541: Was already being celebrated. When the Théâtre des Champs-Élysées was built, Duncan's likeness was carved in its bas-relief over the entrance by sculptor Antoine Bourdelle and included in painted murals of the nine muses by Maurice Denis in the auditorium. In 1987, she was inducted into the National Museum of Dance and Hall of Fame . Anna, Lisa, Theresa and Irma, pupils of Isadora Duncan's first school, carried on

8918-436: Was also a dancer . Soon after Isadora's birth, her father was found to have been using funds from two banks he had helped set up to finance his private stock speculations. Although he avoided prison time, Isadora's mother (angered over his infidelities as well as the financial scandal) divorced him, and from then on the family struggled with poverty. Joseph Duncan, along with his third wife and their daughter, died in 1898 when

9016-468: Was born September 24, 1906. Her father was theatre designer Gordon Craig . Patrick Augustus was born May 1, 1910, fathered by Paris Singer , one of the many sons of sewing machine magnate Isaac Singer . Deirdre and Patrick both died by drowning in 1913. While out on a car ride with their nanny, the automobile accidentally went into the River Seine . Following this tragedy, Duncan spent several months on

9114-564: Was close to her mother, siblings and all of her male and female friends. Later on, in 1921, after the end of the Russian Revolution, Duncan moved to Moscow, where she met the poet Sergei Yesenin , who was eighteen years her junior. On May 2, 1922, they married, and Yesenin accompanied her on a tour of Europe and the United States. However, the marriage was brief as they grew apart while getting to know each other. In May 1923, Yesenin returned to Moscow. Two years later, on December 28, 1925, he

9212-520: Was found dead in his room in the Hotel Angleterre in Leningrad (formerly St Petersburg and Petrograd), in an apparent suicide. Duncan also had a relationship with the poet and playwright Mercedes de Acosta , as documented in numerous revealing letters they wrote to each other. In one, Duncan wrote, "Mercedes, lead me with your little strong hands and I will follow you – to the top of a mountain. To

9310-476: Was in existence for three years and was the birthplace of the " Isadorables " (Anna, Maria-Theresa, Irma, Liesel, Gretel, and Erika ), Duncan optimistically dreamed her school would train “thousands of young dancing maidens” in non-professional community dance. It was a boarding school that in addition to a regular education, also taught dance but the students were not expected or even encouraged to be professional dancers. Duncan did not legally adopt all six girls as

9408-517: Was introduced in 2020 in response to the COVID-19 pandemic, with a Grand Prix worth US$ 1,000 . Section 102(a)(4) of the Copyright Act provides protection in “choreographic works” that were created after January 1, 1978, and are fixed in a tangible medium of expression. Under copyright law, choreography is “the composition and arrangement of a related series of dance movements and patterns organized into

9506-453: Was nearby, on the northeast corner of 23rd Street and Fourth Avenue (now Park Avenue South). Otto Kahn , the head of Kuhn, Loeb & Co. , gave Duncan use of the very modern Century Theatre at West 60th Street and Central Park West for her performances and productions, which included a staging of Oedipus Rex that involved almost all of Duncan's extended entourage and friends. During her time in New York, Duncan posed for studies by

9604-488: Was such a fan that she later lived in a building erected at the same site and address as Duncan, attached a commemorative plaque near the entrance, which is still there as of 2016 . Garland also succeeded in having San Francisco rename an alley on the same block from Adelaide Place to Isadora Duncan Lane. In medicine, the Isadora Duncan Syndrome refers to injury or death consequent to entanglement of neckwear with

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