Another similar case ( contrary to what Vacca has written, as Freudenthal carefully showed ) was that of Francesco Maurolico in his Arithmeticorum libri duo ( 1575 ), who used the technique to prove that the sum of the first n odd integers is n < sup > 2 </ sup >.

An Australian psychedelic rock band and an American independent progressive rock band have used the name " Tin Tin ", and British electronic dance music duo Tin Tin Out was similarly inspired by the character.

The duo have been used in numerous advertising campaigns down the years.

The song " Paradise Circus " is used during the opening credits of BBC series Luther, whilst the song has also been remixed by several prominent artists, such as Canadian electronic music duo Zeds Dead.

At the same time, rival networks NBC, ABC, and DuMont were showing interest in a Ball-Arnaz series, which Ackerman used to convince CBS to sign the duo.

* The Dust Brothers was also the original name used by the British duo, The Chemical Brothers.

The duo used this format, or singing dual leads, on most of their songs.

* The Captain, the stage name used by Daryl Dragon as part of the 1970s and 1980s duo Captain & Tennille

In classical music, the term is most often used for a composition for two singers or pianists ; with other instruments, the word duo is also often used.

The duo used 2D elements from the painting and converted it to 3D.

During 1982 the duo retreated to Chalk Farm in London, and used a bank loan to establish a small 8-track studio above a picture framing factory, giving them freedom to record without having to pay expensive studio fees.

The front room of the flat and also the bedroom were used frequently throughout the show episodes, although Braben would also transplant the duo into various external situations, such as a health-food shop or a bank.

* Air Cuba ( band ), the name used by a ' Big Beat ' duo that was initially named Cuba

* Gouryella, a former trance duo, used Vimana as one of their aliases.

One of the songs, a lullaby named " Rorogwela ", sung by Afunakwa, a Northern Malaita woman, was used as a vocal sample in a 1992 single " Sweet Lullaby " by the French electronica duo Deep Forest, becoming a worldwide hit, but also causing some controversy over perceived " pillaging " of the world music heritage by Western musicians.

The duo spoofed the commercials " we love to hate " with their own versions: " Crazar TVs " spoofed the " Quasar " TV brand with the high-pitched overture ; " Oil of Oyvay " spoofed the de-aging Oil of Olay ; " Macedonian Formula " spoofed Grecian Formula, and questioned why a man would say he used it and thus reveal he has grey hair ; " Russian Express " spoofed American Express, with a muscular KGB agent saying " Don't leave home!

It must be said, thought that this duo was the author and performer of many of the early tangos now listed as " anonymous ", since at that time were not used to signing works.

The pop-electronica duo The KLF notably used ice cream van iconography and included the phrase " Make mine a 99 " in their 1991 single version of " Justified and Ancient ".

The biniou, which plays exactly one octave above the bombarde, and bombarde duo ( soner ar couple ) are an integral and common part of Breton folk music, and was used historically for dance music.

It is now used in solo performances, along with a bombarde in a duo, and as part of the bagad, a kind of pipe band.

Joan Baez who went on tour with the duo in 2002 spoke of Carter's songs in the same terms that she once used to promote a young Bob Dylan:

Kate Ryan, Overground, Böhse Onkelz, Xavier Naidoo, Die Fantastischen Vier, and the DJ duo Blank & Jones have all used the U-Bahn and its stations for their videos as well.

* The British pop duo Pet Shop Boys used the escalator in the video for " Go West ".

The duo traveled around America, sampling local music and cuisine.

The duo were initially noted for their ability to create their own mischievous style of recordings by sampling their private record collections ( which they have themselves referred to as " dodgy ").

* Atmosphere ( music group ), an independent hip-hop music duo from Minneapolis, MN

" As the more dominant personality of the duo, he seems to derive pleasure from regularly abusing Beavis.

A true duopoly ( from Greek duo δύο ( two ) + polein πωλεῖν ( to sell )) is a specific type of oligopoly where only two producers exist in one market.

Dualism ( from the Latin word duo meaning " two ") denotes a state of two parts.

Hip-hop duo Multicyde based their 1999 single " Not for the dough " on a sample from the movie's soundtrack and featured excerpts from the movie in the song's music video.

In 2012, Swedish folk duo First Aid Kit released the single " Emmylou " from the album The Lion's Roar.

Another album from Marsalis Music was recorded in 2005, Occasion: Connick on Piano, Volume 2, a duo album with Harry Connick, Jr. on piano together with Branford Marsalis on saxophone.

Jan and Dean were a rock and roll duo, popular from the late 1950s through the mid 1960s, consisting of Jan Berry and Dean Torrence.

The dynamic duo from years earlier were now gone and a new leader would eventually emerge.

Psychedelic music also contributed to the origins of glam rock, with Marc Bolan changing his psychedelic folk duo into rock band T. Rex and becoming the first glam rock star from 1970.

Robyn revealed on her website that her new album would be released earlier than anticipated, and noted several fabled collaborators on the album, including Klas Åhlund from Teddybears STHLM, Swedish duo The Knife and former Cheiron producer Alexander Kronlund.

This album consisted of ten tracks recorded from the late 1950s and early 1960s while the duo still called themselves Tom & Jerry, including their hit " Hey, Schoolgirl ", and its B-side, " Dancin ' Wild ".

The chief work of Severus is the Chronicle ( Chronica, Chronicorum Libri duo or Historia sacra, c. 403 ), a summary of sacred history from the beginning of the world to his own times, with the omission of the events recorded in the Gospels and the Acts, " lest the form of his brief work should detract from the honour due to those events ".

Other cartoon hippos have included Hanna-Barbera's Peter Potamus, the book and TV series George and Martha, Flavio and Marita on the Animaniacs, Pat of the French duo Pat et Stanley, The Backyardigan's Tasha, and Gloria and Moto-Moto from the Madagascar franchise.

But starting with their second album, Alpha Centauri, the group has been a trio or occasionally duo of electronic instruments, commonly augmented by guitar from Froese ( or, much later, other musicians as well ), and occasionally also other instruments.

Warriors was the last album Numan recorded for Beggars Banquet Records, and was supported by a 40-date UK tour ( again with support from robotic mime and music duo Tik and Tok ) – Numan's first live tour in the UK since his Wembley appearances in 1981.

The Graduate is an album of songs from the soundtrack of Mike Nichols ' movie The Graduate, featuring many songs from the folk-rock duo Simon & Garfunkel.

The fiftieth Doctor Who Virgin New Adventures novel Happy Endings by Paul Cornell features a Polari-speaking Silurian musical duo from the 30th century called Jacquilian and Sanki.

DJ Mahmut & Murat G is a Turkish hip hop duo from Frankfurt, Germany.

The edgy pop rock sound from the duo would catch an ear in the Los Angeles and Orange county music scene.

He previously showed his bass skills on tracks like " Teaser " from Winners and " The Great Awaking " from Blast, the same way that Louis shows his guitar skills on various compositions of the sibling duo.