''Fermat's Last Tango'' is a 2000
off-Broadway
An off-Broadway theatre is any professional theatre venue in New York City with a seating capacity between 100 and 499, inclusive. These theatres are smaller than Broadway theatres, but larger than off-off-Broadway theatres, which seat fewer tha ...
musical about the
proof
Proof most often refers to:
* Proof (truth), argument or sufficient evidence for the truth of a proposition
* Alcohol proof, a measure of an alcoholic drink's strength
Proof may also refer to:
Mathematics and formal logic
* Formal proof, a co ...
of
Fermat's Last Theorem
In number theory, Fermat's Last Theorem (sometimes called Fermat's conjecture, especially in older texts) states that no three positive number, positive integers , , and satisfy the equation for any integer value of greater than . The cases ...
, written by husband and wife
Joshua Rosenblum (music, lyrics) and
Joanne Sydney Lessner (book, lyrics). The musical presents a fictionalized version of the real life story of
Andrew Wiles
Sir Andrew John Wiles (born 11 April 1953) is an English mathematician and a Royal Society Research Professor at the University of Oxford, specialising in number theory. He is best known for Wiles's proof of Fermat's Last Theorem, proving Ferma ...
, and has been praised for the accuracy of the mathematical content. The original production at the
York Theatre
The York Theatre Company is an Off-Broadway theatre company based on the Upper East Side of Manhattan in New York City. Established in 1969, The York is the only theater in New York City, and one of the few in the world, whose two-fold missio ...
received mixed reviews, but the musical was well received by mathematical audiences. A video of the original production has been distributed by the
Clay Mathematics Institute
The Clay Mathematics Institute (CMI) is a private, non-profit foundation dedicated to increasing and disseminating mathematical knowledge. Formerly based in Peterborough, New Hampshire, the corporate address is now in Denver, Colorado. CMI's sc ...
and shown at several mathematical conferences and similar occasions. The musical has also been translated into Portuguese.
Synopsis

The plot is based on the story of the
proof
Proof most often refers to:
* Proof (truth), argument or sufficient evidence for the truth of a proposition
* Alcohol proof, a measure of an alcoholic drink's strength
Proof may also refer to:
Mathematics and formal logic
* Formal proof, a co ...
of
Fermat's Last Theorem
In number theory, Fermat's Last Theorem (sometimes called Fermat's conjecture, especially in older texts) states that no three positive number, positive integers , , and satisfy the equation for any integer value of greater than . The cases ...
by
Andrew Wiles
Sir Andrew John Wiles (born 11 April 1953) is an English mathematician and a Royal Society Research Professor at the University of Oxford, specialising in number theory. He is best known for Wiles's proof of Fermat's Last Theorem, proving Ferma ...
, whose name is changed to "Daniel Keane" in the musical. After seven years of isolation in his attic, Keane believes he has found a proof of the theorem. The musical starts with a press conference, where Keane explains his proof to reporters and promises to return to normal life with his wife Anna and his family. After promising to Anna that he is now "done with Fermat", Keane is surprised in his study by none other than
Fermat
Pierre de Fermat (; ; 17 August 1601 – 12 January 1665) was a French mathematician who is given credit for early developments that led to infinitesimal calculus, including his technique of adequality. In particular, he is recognized for his d ...
himself. Keane asks Fermat for the secret of his proof but is refused. Instead, Fermat introduces him to the "Aftermath", a "heavenly purgatory" where he meets the famous mathematicians
Euclid
Euclid (; ; BC) was an ancient Greek mathematician active as a geometer and logician. Considered the "father of geometry", he is chiefly known for the '' Elements'' treatise, which established the foundations of geometry that largely domina ...
,
Pythagoras
Pythagoras of Samos (; BC) was an ancient Ionian Greek philosopher, polymath, and the eponymous founder of Pythagoreanism. His political and religious teachings were well known in Magna Graecia and influenced the philosophies of P ...
,
Newton
Newton most commonly refers to:
* Isaac Newton (1642–1726/1727), English scientist
* Newton (unit), SI unit of force named after Isaac Newton
Newton may also refer to:
People
* Newton (surname), including a list of people with the surname
* ...
, and
Gauss
Johann Carl Friedrich Gauss (; ; ; 30 April 177723 February 1855) was a German mathematician, astronomer, Geodesy, geodesist, and physicist, who contributed to many fields in mathematics and science. He was director of the Göttingen Observat ...
. They inform him that his proof contains a "big fat hole". In a second press conference, Keane is questioned by reporters about a flaw in the proof. Anna wishes for a corrected proof for her birthday. Fermat mocks Keane, and the other mathematicians inform him that "mathematics is a young man's game".
Keane returns to his attic to try to fix his proof, while his "math widow" wife is frustrated. Fermat continues to taunt Keane, but he is invisible and inaudible to Anna, and the three dance a "bizarre tango à trois" while Anna is confused by Keane talking to Fermat. The other mathematicians from the Aftermath, after noticing that they can't keep up with the mathematics of the past century, decide to grant admission to Keane even if he is unable to prove the theorem. As Keane finally gives up and declares his attempts a failure, Anna suggests that "within your failure lie the seeds of your success", repeating a line earlier spoken by the mathematicians. This quickly leads to Keane realising how to close the gap in the argument, and the musical ends with another press conference, and Fermat congratulates Keane for his proof.
Concept and writing
Rosenblum and Lessner started working on ''Fermat's Last Tango'' in December 1996, after Rosenblum had read a review of
Amir Aczel
Amir Dan Aczel (; ; November 6, 1950 – November 26, 2015) was an Israeli-born American lecturer in mathematics and the history of mathematics and history of science , science, and an author of popular science .
Biography
Amir D. Aczel was ...
's book ''Fermat's Last Theorem''. Originally planned as an opera, it turned into a musical during the writing process, but operatic elements remained. The original working title had been ''Proof'', but was later changed because of the successful 2000 play ''
Proof
Proof most often refers to:
* Proof (truth), argument or sufficient evidence for the truth of a proposition
* Alcohol proof, a measure of an alcoholic drink's strength
Proof may also refer to:
Mathematics and formal logic
* Formal proof, a co ...
''. While written in a whimsical tone and using nerdy jokes, the lyrics contain sophisticated mathematical content and mention the
Shimura-Taniyama conjecture. In the words of mathematician
Arthur Jaffe
Arthur Michael Jaffe (; born December 22, 1937) is an American mathematical physicist at Harvard University, where in 1985 he succeeded George Mackey as the Landon T. Clay Professor of Mathematics and Theoretical Science.
Education and career ...
, "the characters think about mathematics just the way a real mathematician would". Keane's mistake in his proof is an incorrect assumption about
Galois representation
In mathematics, a Galois module is a ''G''-module, with ''G'' being the Galois group of some extension of fields. The term Galois representation is frequently used when the ''G''-module is a vector space over a field or a free module over a ring ...
s, just as in the original proof attempt by Andrew Wiles. The number theorist
Fernando Q. Gouvêa
Fernando Quadros Gouvêa is a Brazilian number theorist and historian of mathematics who won the Lester R. Ford Award of the Mathematical Association of America (MAA) in 1995 for his exposition of Wiles's proof of Fermat's Last Theorem.
He also wo ...
is credited as mathematics consultant for the musical; writer Lessner was not in contact with Wiles while the musical was created.
Almost the entire text is performed in song, with the exception of the prologue. The music contains elements of operetta, blues, pop, and tango. According to reviewer Simon Saltzman, the use of popular musical styles helps to make the show accessible despite its esoteric subject matter.
Original production
The original production by the
York Theatre
The York Theatre Company is an Off-Broadway theatre company based on the Upper East Side of Manhattan in New York City. Established in 1969, The York is the only theater in New York City, and one of the few in the world, whose two-fold missio ...
ran from November 21 to December 31, 2000 at the
Theater at St. Peter's Lutheran Church, directed by Mel Marvin, with sets designed by
James Morgan.
Cast:
*Chris Thompson as Daniel Keane (
baritone
A baritone is a type of classical music, classical male singing human voice, voice whose vocal range lies between the bass (voice type), bass and the tenor voice type, voice-types. It is the most common male voice. The term originates from the ...
)
*
Jonathan Rabb
Jonathan Rabb (born April 28, 1964) is an American novelist, soloist, essayist, actor and writer.
Early life and education
Born in Boston, Rabb grew up in Princeton, New Jersey, where his father, Theodore K. Rabb, taught history at the univers ...
as Pierre de Fermat (
tenor
A tenor is a type of male singing voice whose vocal range lies between the countertenor and baritone voice types. It is the highest male chest voice type. Composers typically write music for this voice in the range from the second B below m ...
)
*Edwardyne Cowan as Anna Keane (
mezzo-soprano
A mezzo-soprano (, ), or mezzo ( ), is a type of classical music, classical female singing human voice, voice whose vocal range lies between the soprano and the contralto voice types. The mezzo-soprano's vocal range usually extends from the A bel ...
)
*Christianne Tisdale as Euclid and reporter 1 (
soprano
A soprano () is a type of classical singing voice and has the highest vocal range of all voice types. The soprano's vocal range (using scientific pitch notation) is from approximately middle C (C4) = 261 Hertz, Hz to A5 in Choir, choral ...
)
*Carrie Wilshusen as Sir Isaac Newton and reporter 2 (
mezzo-soprano
A mezzo-soprano (, ), or mezzo ( ), is a type of classical music, classical female singing human voice, voice whose vocal range lies between the soprano and the contralto voice types. The mezzo-soprano's vocal range usually extends from the A bel ...
)
*
Gilles Chiasson
Gilles Chiasson (born November 1, 1966) is an American producer, director, composer, writer and actor. While he first came to prominence as an actor, particularly in the original cast of the Tony Award and Pulitzer Prize winning RENT, Chiasson ...
as Carl Friedrich Gauss and reporter 3
*Mitchell Kantor as Pythagoras and reporter 4 (
bass
Bass or Basses may refer to:
Fish
* Bass (fish), various saltwater and freshwater species
Wood
* Bass or basswood, the wood of the tilia americana tree
Music
* Bass (sound), describing low-frequency sound or one of several instruments in th ...
)
Musical numbers

The numbers are listed as in the CD production's liner notes.
*Prologue – Reporter 4, Fermat
*Press Conference I – Reporters, Keane
*You're a Hero Now – Anna, Keane
*The Beauty of Numbers – Keane
*Tell Me Your Secret – Keane, Fermat
*The Aftermath – Mathematicians, Fermat, Keane
*I Dreamed – Keane, Anna
*Press Conference II – Reporters, Keane, Anna
*My Name – Fermat
*All I Want for My Birthday – Anna
*Game Show, Part I – Fermat, Keane
*Young Man's Game – Fermat, Mathematicians
*Game Show, Part II – Fermat, Keane, Mathematicians
*Math Widow – Anna
*I'll Always Be There (Fermat's Last Tango) – Fermat, Keane, Anna
*Relay Race – Mathematicians
*I'm Stumbling – Keane
*Oh, It's You – Keane, Pythagoras
*The Beauty of Numbers (reprise) – Anna, Keane
*Press Conference III – Reporters, Keane, Fermat
Other performances
The musical was translated into Portuguese by César Viana as and was played in Portuguese university towns in 2003 and at the
Teatro da Trindade
The ''Teatro da Trindade'' is a theatre in the Chiado neighbourhood of Lisbon, Portugal, built in the 19th century. It is one of the oldest theatres in Lisbon still in operation.
Construction and opening
In 1866, Francisco Pereira Palha de Fari ...
in 2004. Students at
Madison East High School
Madison East High School is one of four comprehensive four-year high schools in Madison, Wisconsin. It was established in 1922, making it the oldest public high school still operating in Madison. The school mascot is "Peppy Purgolder", an animal ...
performed an abridged version in 2005 and 2006, including at a statewide meeting of the
Mathematical Association of America
The Mathematical Association of America (MAA) is a professional society that focuses on mathematics accessible at the undergraduate level. Members include university
A university () is an educational institution, institution of tertiary edu ...
. In March 2023, the musical was performed at the
University of Oxford
The University of Oxford is a collegiate university, collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the List of oldest un ...
in one of the
Mathematical Institute's lecture halls.
Reception
Reviews for ''Fermat's Last Tango'' during its theatrical run were mixed. Wilburn Hampton's review in ''
The New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'', while noticing the catchy tunes and lyrics, found fault with Daniel Keane not "becom
nga real character". Elyse Sommer's review in ''CurtainUp'' was more positive, finding praise for both writing and the performances of Rabb and Thompson. Writing in the "Periodica" section of ''TotalTheater'', reviewer Simon Saltzman praised Rabb and called the titular tango the highlight of the show.
The mathematical reception has been more generally positive, with audiences reactions to screenings of the film version ranging from "mildly amused to enthusiastic." Mathematician
Robert Osserman
Robert "Bob" Osserman (December 19, 1926 – November 30, 2011) was an American mathematician who worked in geometry. He is specially remembered for his work on the theory of minimal surfaces.
Raised in Bronx, he went to Bronx High School of ...
, while acknowledging the musical as unique to the point of making comparisons difficult, found it fun and moving and praised the actors and the music. He especially pointed out the mathematical accuracy, but mildly complained about stereotyping of mathematicians and the differences between the true story of Andrew Wiles and the fictional story of Daniel Keane: Unlike Keane, Wiles did not withdraw to his attic for seven years and did not solve the complete
Shimura-Taniyama conjecture.
Richard Taylor's role in the proof is also omitted in the fictionalized version. Michele Emmer's review in the ''
Mathematical Intelligencer
''The Mathematical Intelligencer'' is a mathematical journal published by Springer Science+Business Media that aims at a conversational and scholarly tone, rather than the technical and specialist tone more common among academic journals. Volumes ...
'' was positive, stating "the gamble of trying to produce an entertaining and mathematically correct musical turned out a success." In their book ''Math Goes to the Movies'', mathematicians
Burkard Polster
Burkard Polster (born 26 February 1965 in Würzburg) is a German mathematician who runs and presents the ''Mathologer'' channel on YouTube. He is a professor of mathematics at Monash University in Melbourne, Australia.
Education and career
P ...
and Marty Ross were enthusiastic about ''Fermat's Last Tango'', calling it "terrific fun" and a "must-see". In her book ''Science on Stage From Doctor Faustus to Copenhagen'', literary scholar
Kirsten Shepherd-Barr noted the musical's "successful integration of a surprising amount of 'real' mathematics with a charming and witty score."
In his book ''Dr. Riemann's Zeros: The Search for the $1 Million Solution to the Greatest Problem in Mathematics'', journalist
Karl Sabbagh
Karl Sabbagh is a British writer, journalist, television producer, and convicted sex offender. His work is mainly non-fiction: he has written books about historical events and produced documentaries for both British and American broadcasters.
...
wrote about seeing a performance of ''Fermat's Last Tango'' after meeting Andrew Wiles at Princeton. He described the Daniel Keane in the musical as "an accurate portrayal of Wiles" and stated "The writers of this musical had managed to capture the essence of the mathematical enterprise and to see that the human drama of Wiles's struggle with Fermat's Last Theorem embodied as much passion, frustration and triumph as is found in the plot of any conventional film or play." Andrew Wiles himself saw the musical in December 2000, with his family. In an interview, he later stated that he "really liked the portrayal of the personal part of the story - the whole idea of the threesome at the tango was beautifully done" and that he felt "it had been very intelligently written".
Recordings
On the initiative of
Clay Mathematics Institute
The Clay Mathematics Institute (CMI) is a private, non-profit foundation dedicated to increasing and disseminating mathematical knowledge. Formerly based in Peterborough, New Hampshire, the corporate address is now in Denver, Colorado. CMI's sc ...
president
Arthur Jaffe
Arthur Michael Jaffe (; born December 22, 1937) is an American mathematical physicist at Harvard University, where in 1985 he succeeded George Mackey as the Landon T. Clay Professor of Mathematics and Theoretical Science.
Education and career ...
, a high quality live performance video was made, directed by David Stern. It was first shown to an audience of four hundred people in July 2001 in Berkeley, and later sold at cost by the Clay Mathematics Institute in both VHS and DVD editions. A pamphlet about the mathematics and the mathematicians as well as the actors in the musical was included. The film was shown at various mathematical conferences.
A recording made on December 18, 2000, was distributed as a CD version by
Original Cast Records. It was positively reviewed by Matthew Murray, who especially praised Edwardyne Cowan's performance as Anna Keane.
References
Footnotes
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External links
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{{Pierre de Fermat
Off-Broadway musicals
2000 musicals
Sung-through musicals
Fermat's Last Theorem
Musicals inspired by real-life events