OpenLLM-France/wikimedia huggingface dataset:
# 2021 ATP Salzburg Open

The 2021 ATP Salzburg Open was a professional tennis tournament played on outdoor clay courts. It was the first edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Anif (Salzburg), Austria between 5 and 11 July 2021.

## Singles main draw entrants
### Seeds

| Country | Player | Rank$^1$ | Seed |
| BRA | Thiago Monteiro | 81 | 1 |
| URU | Pablo Cuevas | 84 | 2 |
| ARG | Federico Coria | 87 | 3 |
| ARG | Facundo Bagnis | 92 | 4 |
| ESP | Roberto Carballés Baena | 100 | 5 |
| JPN | Taro Daniel | 103 | 6 |
| COL | Daniel Elahi Galán | 112 | 7 |
| ESP | Carlos Taberner | 113 | 8 |
* $^1$ Rankings are as of 28 June 2021.

### Other entrants

The following players received wildcards into the singles main draw:
* Jakob Aichhorn
* Peter Heller
* Maximilian Neuchrist
The following player received entry into the singles main draw using a protected ranking:
* Gerald Melzer
The following player received entry into the singles main draw as an alternate:
* Matteo Viola
The following players received entry from the qualifying draw:
* Alexander Erler
* Nicolás Jarry
* Jiří Lehečka
* Denis Yevseyev
The following player received entry as a lucky loser:
* Alexey Vatutin

## Champions
### Singles

* Facundo Bagnis def. Federico Coria 6–4, 3–6, 6–2.

### Doubles

* Facundo Bagnis / Sergio Galdós def. Robert Galloway / Alex Lawson 6–0, 6–3.
# 2021 AV7

2021 AV$_7$ is a near-Earth asteroid of the Apollo group, discovered by astronomers Alain Maury and G. Attard at San Pedro de Atacama, Chile on 15 January 2021. With an estimated diameter of 440–1,000 m (1,440–3,280 ft), it is considered a potentially hazardous asteroid. It has a highly elliptical orbit that brings it within Earth's orbit. However, its nominal orbit has a minimum orbit intersection distance around 2.6×10^$^6$ km (1.6×10^$^6$ mi) from Earth's orbital path, and the closest approach the asteroid is expected to make over the next two centuries is to within 0.140 astronomical units (20.9×10^$^6$ km; 13.0×10^$^6$ mi) on 28 February 2096.

## Discovery

2021 AV$_7$ was discovered by astronomers Alain Maury and G. Attard at San Pedro de Atacama, Chile on 15 January 2021. It was first observed in the constellation Canis Major at an apparent magnitude of 19.8. The asteroid was moving at an on-sky rate of 1.15 arcseconds per minute, from a distance of 0.656 AU (98.1 million km; 61.0 million mi) from Earth.
The asteroid was subsequently listed on the Minor Planet Center's Near-Earth Object Confirmation Page (NEOCP) as 11E401. Over three days, follow-up observations were carried out by various observatories including Spacewatch (691) at Kitt Peak and the Steward Observatory (I52) at Mount Lemmon. The listing was confirmed and publicly announced as 2021 AV$_7$ on 18 January 2021.

## Orbit and classification

With a long observation arc spanning over five years, the orbit of 2021 AV$_7$ is well-secured with a condition code of 0. The earliest known precovery observations of 2021 AV$_7$ are from Pan-STARRS 1 on 9 July 2016. These precovery observations were published by the Minor Planet Center on 30 April 2021.
2021 AV$_7$ orbits the Sun at an average distance of 3.07 AU once every 5.38 years. Its orbit has a high eccentricity of 0.7 and an inclination of 28° with respect to the ecliptic plane. Over the course of its orbit, its distance from the Sun ranges from 0.91 AU at perihelion to 5.2 AU at aphelion, crossing the orbits of Earth, Mars, and Jupiter. Since its orbit crosses that of Earth's while having a semi-major axis greater than 1 AU, 2021 AV$_7$ is classified as an Apollo asteroid. Its nominal orbit has a minimum orbit intersection distance around 2.6×10^$^6$ km (1.6×10^$^6$ mi) from Earth's orbital path. Its closest recent approach to Earth occurred on 17 March 2021, at a distance of 0.276 AU (41.3 million km; 25.7 million mi), and the closest approach it is expected to make over the next two centuries is to within 0.140 AU (20.9 million km; 13.0 million mi) on 28 February 2096.

## Physical characteristics
### Diameter and albedo

Based on an magnitude-to-diameter conversion and a measured absolute magnitude of 18.9, 2021 AV$_7$ measures between 440 and 1,000 meters in diameter for an assumed geometric albedo of 0.25 and 0.05, respectively.
# Polacco

Polacco is a surname. Notable people with the surname include:
* Cesare Polacco (1900–1986), Italian actor and voice actor
* Giorgio Polacco (1875–1960), Italian conductor
* Patricia Polacco (born 1944), American author and illustrator
# John M. Glass

John M. Glass (1843–1925) was a mayor of Jeffersonville, Indiana, and Chief of Police of Los Angeles, California.

## Biography
### Jeffersonville

John Glass was the Marshal of Jeffersonville, Indiana, from 1879 to 1883 before becoming the mayor of Jeffersonville. He defeated Luther Warder for mayoral and served as mayor from 1883 to 1885. In 1884 as Mayor he appealed to the Board of Trade Relief Committee to attempt to acquire several thousand pounds of meat, coffee, and bread to help stimulate the trade market in Jeffersonville. He also attempted to acquire $50,000 from Congress for the city's levee system. When the money wasn't received John Glass claimed that some residents of the town had paid $1,250 to officers of the house of the 48th Congress. In April 1886 he resigned from his position and was then subject to examination of the House Civil Service Committee of charges of bribery.

### Los Angeles

Following the end of his political career in Jeffersonville, John moved to Los Angeles and joined the Los Angeles Police Department. On July 17, 1889, John became the 17th Chief of Police for Los Angeles, and the first to exceed two years as Chief of Police. John served until January 1, 1900. Twenty-five Chiefs later, no one had served longer than John Glass at that position until William H. Parker, who served for 16 years.
During his career as Chief of Police he set up the first police districts, substations, patrol wagon, entry level officer requirements, police matron, and California's first adoption of the Alphonse Bertillon identification system. He increased the manpower of the police by 20%. In addition he made the police officer appear more military with the purchase of Winchester rifles and military style uniforms, and with drills conducted outside their central station. However, as in every city, problems occur, and by 1900 John Glass was falling behind with only about 70 officers for the city's 100,000 population. Under political pressure, John Glass was replaced by Charles Elton.
# Katrine Madsen

Katrine Madsen (born 7 March 1972 in Aarhus, Denmark) is a Danish jazz singer.

## Biography

Madsen studied at the Royal Danish Academy of Music and has worked in Copenhagen on albums with transplanted American jazz artists Ed Thigpen and Richard Boone.
In 2002, she founded the Katrine Madsen Sextet and gave their debut concert at the Copenhagen Jazz Festival.

## Discography
### As leader

* I'm Old Fashioned (Mecca, 1996)
* Dream Dancing (Mecca, 1997)
* You Are So Beautiful (Mecca, 1998) with Ed Thigpen Trio
* My Secret (Mecca, 2000) quartet feat. Lars Møller
* Magic Night (Mecca, 2002) with Bohuslän Big Band
* Close to You (Stunt, 2004) with Stefano Bollani, Jesper Bodilsen, and Morten Lund
* Supernatural Love (Stunt, 2006) with Ulf Wakenius
* Simple Life (Stunt, 2009) with Joakim Milder, Henrik Gunde Pedersen, Jesper Bodilsen, Jonas Johansen, Morten Lund, and Ole Kibsgaard

### As guest

* 1999: A Tribute to Love (Stunt), with Richard B. Boone
* 2000: Edderkoppen Soundtrack
* 2002: Gershwin & More (Mecca), with Baker Boys
* 2002: Live in Stockholm (Music Mecca), with Svante Thuresson
* 2003: We Are Povo, with POVO
* 2005: Box of Pearls (Stunt), with Svante Thuresson
# Godson (disambiguation)

A godson is a male godchild.
Godson or The Godson may also refer to:
* Godson (surname)
* The Godson (film), a 1998 American comedy film
* "The Godson" (short story), a story by Leo Tolstoy
* Le Samouraï, a 1967 French crime film released as The Godson in English
* The Godson, a 1971 Mafia/sexploitation film
* Loongson, a brand of CPU chips
# 2017 Kyrgyzstan Cup

The 2017 Kyrgyzstan Cup is the 26th season of the Kyrgyzstan Cup knockout tournament. The cup winner qualifies for the 2018 AFC Cup.
The draw of the tournament was held on 4 May 2017.

## Round 1

17 May 2017
"Bostery" (Issyk-Kul) - "Alga-Chui" (Tokmok) 1: 4
"Birimdik" (Sokuluk) - "Kara-Balta-2" (Kara-Balta) 1: 1 Penalty 2: 4
"Yntymak" (Ysyk-Kul) - RUOR (Bishkek) 3: 1
"Semeteus" (Talas) - "Alive" (Kant) 3: 2
"Kok-Zhangak" (Kok-Zhangak) - "Mailuu-Suu" (Mailuu-Suu) 0: 0 Penalty 2: 4
"Bazar-Korgon" (Bazar-Korgon) - "Neftchi-2" (Kochkor-Ata) 3: 0
"Toktogul" (Toktogul) - "Tash-Kumyr" (Tash-Kumyr) 3: 0 (Tech.)
"Batken City" (Batken) - "Aidarken" (Aidarken) 3: 0 (Tech.)

## Round 2

23 May 2017
Semetej - Abdysh-Ata-2 1: 2
24 May 2017
"Intymak" - "Dordoi 2" 1: 5
"Kara-Balta-2" - "Our" 0: 5
Alga-Chui - Alga-2 2: 0
"Toktogul" - "Energetic" 0: 3 (Tech.)
"Bazar-Korgon" - "Dostuk" 0: 3 (Tech.)
"Mailuu-Suu" - "Jalal-Abad" 3: 0 (Tech.)
25 May 2017
"Batken City" - "Shakhtar" 3: 0 (Tech.)

## Round 3

3 June 2017
"Our" - "Dordoi" 0: 3
"Abdysh-Ata-2" - "Abdysh-Ata" 0: 2
"Mailuu-Suu" - "Alai" 0: 5
4 June 2017
"Alga-Chui" - "Kara-Balta" 1: 3
"Dordoi-2" - "Alga" 2: 1
Energetik - Neftchi 0: 5
Dostuk - Aldier 3: 0 (Tech.)
"Batken City" - "Alay-2." 0: 3 (Tech.)

## Quarter-finals

14 June 2017
"Alay-2" - "Alay" 5:10
26 July 2017
"Neftchi" - "Dostuk" 10: 2
"Abdysh-Ata" - "Dordoi-2" 3: 2
27 July 2017
"Dordoi" - "Kara-Balta" 2: 0

## Semifinals

The four winners from the Quarterfinals were drawn into two two-legged ties.
# Gibberula jorgefoyoi

Gibberula jorgefoyoi is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae.
# Pharaonella

Pharaonella is a genus of bivalves belonging to the family Tellinidae.
The species of this genus are found in Southern Hemisphere.
Species:
* Pharaonella amanyu Kato & Ohsuga, 2017
* Pharaonella astula (Hedley, 1917)
* Pharaonella aurea (Perry, 1811)
* Pharaonella cuspis (Hanley, 1844)
* Pharaonella dialeuca (Deshayes, 1855)
* Pharaonella miles (Hanley, 1844)
* Pharaonella pharaonis (Hanley, 1844)
* Pharaonella semilaevis (Martens, 1865)
* Pharaonella sieboldii (Deshayes, 1855)
* Pharaonella venusta (Deshayes, 1855)
* Pharaonella wallaceae (Salisbury, 1934)
# Aşağı Küngüt

Aşağı Küngüt (also, Ashaga-Kyungyut and Ashagy-Kyungyut) is a village and municipality in the Shaki district of Azerbaijan. It has a population of 1,298.
The etymology of the name Küngüt in the name of the village comes from the name of the country Kang (Kangar), with a Sogdian plural suffix -t, expressed in the ancient Chinese annals as Guniue.
# Qeertartivatsiaq Island

Qeertartivatsiaq Island (old spelling: Qêrtartivatsiaq) is an uninhabited island in the Sermersooq municipality in southeastern Greenland.

## Geography

Qeertartivatsiaq lies near the entrance of Sermilik Fjord on the western side, at the mouth of Johan Petersen Fjord and its eastern branch, the Stoklund Fjord which lies between the northwestern side of Qeertartivatsiaq and the mainland.
The island is located in King Christian IX Land to the southwest of Tiniteqilaaq, and to the west of Ammassalik Island.
# Bangladesh Billie Jean King Cup team

The Bangladesh Fed Cup team represents Bangladesh in the Fed Cup tennis competition and are governed by the Bangladesh Tennis Federation. They took part in the Fed Cup for the first time in 2019, competing in the Asia/Oceania Zone Group II.

## Players

| Year | Team | Team | Team | Team |
| 2019 | Mashfia Afrin | Eshita Afrose | Jarin Sultana Jolly | Susmita Sen |
# List of moths of Mali

Moths of Mali represent only 23 known moth species. The moths (mostly nocturnal) and butterflies (mostly diurnal) together make up the taxonomic order Lepidoptera.
This is a list of moth species which have been recorded in Mali.

## Arctiidae

* Alpenus maculosa (Stoll, 1781)
* Amerila niveivitrea (Bartel, 1903)

## Geometridae

* Zamarada nasuta Warren, 1897

## Lasiocampidae

* Cleopatrina bilinea (Walker, 1855)
* Lasiocampa bilineata (Mabille, 1884)
* Pallastica lateritia (Hering, 1928)
* Streblote panda Hübner, 1822

## Noctuidae

* Abrostola confusa Dufay, 1958
* Acontia basifera Walker, 1857
* Acontia buchanani (Rothschild, 1921)
* Acontia citrelinea Bethune-Baker, 1911
* Acontia opalinoides Guenée, 1852
* Acontia semialba Hampson, 1910
* Heliocheilus confertissima (Walker, 1865)
* Hypena obacerralis Walker, [1859]
* Hypotacha isthmigera Wiltshire, 1968
* Spodoptera exempta (Walker, 1857)

## Psychidae

* Acanthopsyche carbonarius Karsch, 1900

## Pterophoridae

* Hepalastis pumilio (Zeller, 1873)

## Pyraloidea

* Analyta calligrammalis Mabille, 1879
* Ancylolomia simplella de Joannis, 1913
* Autocharis marginata Guillermet, 1996
* Biafra concinnella (Ragonot, 1888)
* Botyodes asialis Guenée, 1854
* Botyodes diniasalis (Walker, 1859)
* Diaphania indica (Saunders, 1851)
* Euclasta warreni Distant, 1892
* Ghesquierellana hirtusalis (Walker, 1859)
* Glyphodes bitriangulalis Gaede, 1917
* Glyphodes negatalis (Walker, 1859)
* Haritalodes derogata (Fabricius, 1775)
* Herpetogramma basalis (Walker, 1866)
* Hypsopygia bamakoensis Leraut, 2006
* Maliarpha separatella Ragonot, 1888
* Maruca vitrata (Fabricius, 1787)
* Palpita vitrealis (Rossi, 1794)
* Parapoynx fluctuosalis (Zeller, 1852)
* Pardomima callixantha Martin, 1955
* Parotis impia (Meyrick, 1934)
* Patania balteata (Fabricius, 1798)
* Pioneabathra olesialis (Walker, 1859)
* Pyralis pictalis (Curtis, 1834)
* Pyrausta phoenicealis (Hübner, 1818)
* Sameodes cancellalis (Zeller, 1852)
* Spoladea recurvalis (Fabricius, 1775)
* Syllepte ovialis (Walker, 1859)
* Synclera traducalis (Zeller, 1852)
* Terastia africana Sourakov, 2015
* Ulopeza conigeralis Zeller, 1852
* Ulopeza flavicepsalis Hampson, 1912

## Tineidae

* Cimitra fetialis (Meyrick, 1917)
* Endromarmata lutipalpis (Meyrick, 1922)
* Hyperbola pastoralis (Meyrick, 1931)

## Tortricidae

* Cosmorrhyncha acrocosma (Meyrick, 1908)
# List of people from Lewiston, New York

A list of people who are from or have lived in Lewiston, New York (including: The Village of Lewiston, Lewiston Heights, the Tuscarora Reservation, Pekin, and Colonial Village). Individuals are listed in alphabetical order by last name in each category.

## Artists

* Jacob Kassay, painter

## Authors

* James Fenimore Cooper, American writer who stayed during the summer of 1821
* Catherine Gildiner, who wrote the best-selling memoir Too Close to the Falls
* Herbert Richardson, publisher and founder of The Edwin Mellen Press

## Bands, composers, and musicians

* Tim Easton, guitarist, singer-songwriter

## Business and industry

* Benjamin Barton, businessman and builder of the Frontier House
* Samuel Barton, businessman and builder of the Frontier House
* Frank A. Dudley, former lawyer, politician, hotelier and business owner
* William Morgan, New York businessman and author on Freemasonry
* Paul A. Schoellkopf, industrialist and chairman of the Buffalo Niagara Electric Corporation

## Military

* Joseph Brant, Mohawk military and political leader

## Politics and law

* John Ceretto, New York state assemblyman
* Bates Cooke, member United States House of Representatives and later New York State Comptroller
* John B. Daly, politician
* Noah Davis, politician
* Francine DelMonte, former New York State Assemblywoman
* Clinton Rickard, Tuscarora chief
* Stefano Magaddino, mafia boss
* James S. Simmons, politician
* Horatio J. Stow, politician
* Sheldon Thompson, former mayor of Buffalo, New York

## Religion, charities, social advocacy

* Wallace "Mad Bear" Anderson, Native American activist
* John Napoleon Brinton Hewitt, notable linguist
* Barney E. Warren, Christian hymnwriter and minister

## Sports

* Jack Armstrong, TV analyst and announcer for the Toronto Raptors
* Mike Bell, Major League Baseball player
* Kyle Cerminara, former US Olympic wrestler
* Rick Dudley, professional hockey player and coach
* Daryl Johnston, fullback for the Dallas Cowboys
* Patti Lank, curler
* Robert Lindley Murray, chemist and tennis player
* Vince Molyneaux, Major League Baseball player
* Earl Seick, former professional football player
# Quiz league

A quiz league is an organization running quizzes on a home and away basis, usually in pubs. Like the pub quiz, it is chiefly a British phenomenon although the format has significant differences to a pub quiz due to the usual number of teams (two) and the presence of individual questions.

## Team format

Two teams, one Home, one Away play each other, responding, perhaps alternately, often orally, to a questionmaster.
Many varying formats exist, one of the most widely played having been devised as a game used by soldiers when relaxing is usually known as the Merseyside Quiz Leagues (MQL) format. It consists of 64 questions in 8 rounds of 8 questions each asked to individuals on the teams alternately. Correctly answering your own question scores 2 points though it can be passed within the team (if the player chooses not to answer) or over to the other team (if the player or team answer wrongly) for one point.
In the MQL format, there is no conferring as such. Where a player decides not to answer their question, the team captain will normally decide which other member of the team is to answer by assessing the hand signals made by the players on the team and his/her own judgement. The opposition will also use hand signals to decide who is to answer the question in the event of it being passed over. After 4 rounds, the order of answering changes so the team who began round 1 going first begin round 5 going second. This is done by switching each team's questions from A to B or from B to A depending on which questions they started with. The MQL format is played by the main leagues in London and Merseyside.
Other formats exist that involve more conferring within teams, list rounds and "pick a category" rounds. All questions are team questions and both teams answer the same questions which are written down on an answer sheet and handed in at the end of the round. There are four rounds of ten questions, and a picture round.

## Individual format

Many quiz leagues run individual competitions. The format used by Merseyside Quiz Leagues and the Quiz League of London is the MIMIR quiz (named after Mímir, a god of Norse mythology who was renowned for his knowledge and wisdom). Matches are played in groups of four with positions drawn at random and each person has 3 questions addressed to them, in each of 5 rounds.
Time to answer is at the discretion of the question master but a wrong answer or a pass gives any of the other three an opportunity to score a bonus point. The decision as to who gets the first chance to answer for a bonus is determined by offering the question to whoever, at that stage, has made least attempts to gain bonus points or, if there is more than one player who has made the least bonus attempts, the next player in line (e.g. if this happened on the first question, P2 would have the first option on a bonus attempt). As well as a scorekeeper, a bonus counter is needed to track each player's bonus attempts.
# Quiz with Hale

Quiz with Hale was a British television game show that aired on the BBC from 1946 to 1947. Presented by Lionel Hale, the 30-minute series invited viewers to play along by marking their own quiz paper.
Page 29 (31 of file) of volume 147 of The Chemist and Druggist says episode telecast 28 December 1946 asked viewers to identify three substances from their Latin labels.
The programme is lost, as methods to record live television were not developed until late 1947, and were used very rarely by the BBC until the mid-1950s, additionally U.K. game shows were usually wiped into the 1980s.
# SMART-R

The Shared Mobile Atmospheric Research and Teaching Radar, colloquially known as SMART-R or SR, is a mobile Doppler weather radar platform operated and created by University of Oklahoma (OU) with aide from Texas A&M and Texas Tech University in 2001.

## Development

Throughout the early and late 1990s, several mobile radar concepts came to be, often involving high frequency X-band radars which suffer significant attenuation, and often lack in range. Ideally, these radars would serve as research and observation platforms, covering regions scarcely covered by the NEXRAD network as a whole. One such concept later went on to become the Doppler On Wheels, now a fleet of 3 operational vehicles.
In order to counteract the problems previously described with high frequency radars, two decommissioned WSR-74 radars, originally used for local warnings, were acquired by TAMU. These two radars, both operating in the C-band, are less susceptible to attenuation in precipitation and have overall greater ranges for doppler products. Throughout the rest of the 90s and into 2000, development of the first SMART-R, SR-1, began. During development, a fire in the garage housing SR-1 broke out, destroying the truck and several components. Much of the radar survived, however, and the project continued with the completion of SR-1 in late 2001. Following this, SR-2 was assembled and eventually completed in 2004.

## Characteristics

All listed characteristics will apply to both SRs. The operating maximum power for SR is 250 kW. The highest operating frequency for SR is 5,635 MHz - falling into the C-band. With a 2.5 m center-fed parabolic antenna, the gain is approximately 40 dB. Moreover, half power beamwidth is approximately 1.5°.

## Deployments

Since the inception of the project, both SMART-Rs have performed field research in various regions of the United States, including hurricane research, and haboob intensification studies. Both SMART-Rs have sampled tornadic supercells across the plains, taking part in projects such as VORTEX-2 and VORTEX-SE. Given the SR platform consists of two individual radars, projects are often arranged in what is known as a dual-doppler setup, whereas two radars are located at different locations in varying orientations so as to maximize wind retrieval accuracy.
# Goldenstedt (Oldb) station

Goldenstedt is a railway station located in Goldenstedt, Germany. The station is located on the Delmenhorst–Hesepe railway and the train services are operated by NordWestBahn.

## Train services

The station is served by the following services:
* Local services RB 58 Osnabrück - Bramsche - Vechta - Delmenhorst - Bremen
# Goeppertia warszewiczii

Goeppertia warszewiczii (previously Calathea warscewiczii) is a species of perennial, herbaceous plant in the Marantaceae family, endemic to Costa Rica and Nicaragua. It grows up to 0.5 to 1 meters (20-40 inches) high, by 0.5 to 1 meters (20-40 inches) wide, with patterned lanceolate leaves, and white cone-like inflorescences that fade to yellow or pink.

## Synonyms

* Calathea warscewiczii (L. Mathieu ex Planch.) Planch. & Linden
* Maranta warscewiczii L. Mathieu ex Planch.
* Maranta warscewiczii L. Mathieu
* Phyllodes warscewiczii (L. Mathieu) Kuntze
# List of numerical computational geometry topics

List of numerical computational geometry topics enumerates the topics of computational geometry that deals with geometric objects as continuous entities and applies methods and algorithms of nature characteristic to numerical analysis. This area is also called "machine geometry", computer-aided geometric design, and geometric modelling.
See List of combinatorial computational geometry topics for another flavor of computational geometry that states problems in terms of geometric objects as discrete entities and hence the methods of their solution are mostly theories and algorithms of combinatorial character.

## Curves

In the list of curves topics, the following ones are fundamental to geometric modelling.
* Parametric curve
** Bézier curve
** Spline
*** Hermite spline
**** Beta spline
***** B-spline
*** Higher-order spline
*** NURBS
* Contour line

## Surfaces

* Bézier surface
* Isosurface
* Parametric surface

## Other

* Level-set method
* Computational topology