Q: Information: - The term figurate number is used by different writers for members of different sets of numbers, generalizing from triangular numbers to different shapes (polygonal numbers) and different dimensions (polyhedral numbers). The term can mean - Geometry (from the ; "geo-" "earth", "-metron" "measurement") is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. A mathematician who works in the field of geometry is called a geometer. - A triangular number or triangle number counts the objects that can form an equilateral triangle, as in the diagram on the right. The th triangular number is the number of dots composing a triangle with dots on a side, and is equal to the sum of the natural numbers from 1 to . The sequence of triangular numbers , starting at the 0th triangular number, is - In mathematics, a polygonal number is a number represented as dots or pebbles arranged in the shape of a regular polygon. The dots are thought of as alphas (units). These are one type of 2-dimensional figurate numbers. - A heptagonal number is a figurate number that represents a heptagon . The n - th heptagonal number is given by the formula \ frac ( 5n ^ 2 - 3n ) ( 2 ) . The first few heptagonal numbers are : 1 , 7 , 18 , 34 , 55 , 81 , 112 , 148 , 189 , 235 , 286 , 342 , 403 , 469 , 540 , 616 , 697 , 783 , 874 , 970 , 1071 , 1177 , 1288 , 1404 , 1525 , 1651 , 1782 , ... ( sequence A000566 in OEIS ) - The Multinational Aircrew Electronic Warfare Tactics Facility Polygone - POLYGON is an Electronic Warfare Tactics Range located on the border between Germany and France. It is a tri-national facility operated by France, Germany and the United States. - In geometry, a heptagon is a seven-sided polygon or 7-gon. After reading the paragraphs above, choose the best answer for the entity that related to 'heptagonal number' with the relationship of 'subclass of'. Choices: - diagram - facility - field - geometry - heptagon - mathematician - mathematics - number - polygon - polygonal number - position - sequence - shape - sum - term - thought - type - warfare
A: polygonal number

Q: Information: - Atari Teenage Riot (abbreviated ATR) is a German digital hardcore group formed in Berlin in 1992. The name was taken from a Portuguese Joe song entitled "Teenage Riot" from the album "Teen-age Riot", with the word 'Atari' added as an Atari ST computer was used to create compositions. Highly political, they fused anarchist, anti-fascist and anti-Nazi views with punk vocals and the newly emerging techno sound called digital hardcore, which is a term band member Alec Empire used as the name of his record label. - Alec Empire (born Alexander Wilke-Steinhof on 2 May 1972 in Charlottenburg, West Berlin) is a German musician who is best known as a founding member of the band Atari Teenage Riot. Also a prolific and distinguished solo artist, producer and DJ, he has released well over a hundred albums, EPs and singles and remixed over seventy tracks for various artists including Bjork. He was also the driving force behind the creation of the digital hardcore subgenre and the record labels Digital Hardcore Recordings and Eat Your Heart Out. - The Future of War is the follow - up album to Delete Yourself by Atari Teenage Riot . Faster and harder than their previous effort , the album sees ATR 's only female member at the time Hanin Elias providing vocals for a larger share of the songs . In May 2002 , The Future of War was placed on the Bundesprufstelle fur jugendgefahrdende Medien index in Germany , meaning that it may not be advertised or sold to minors . According to band member Alec Empire , Future of War was notable for its '' left - rooted critique of the ' modern ' high - tech - war , as we had seen it all some years previously during the Gulf War . '' - A record label or record company is a brand or trademark associated with the marketing of music recordings and music videos. Often, a record label is also a publishing company that manages such brands and trademarks, coordinates the production, manufacture, distribution, marketing, promotion, and enforcement of copyright for sound recordings and music videos; conducts talent scouting and development of new artists ("artists and repertoire" or "A&R"); and maintains contracts with recording artists and their managers. The term "record label" derives from the circular label in the center of a vinyl record which prominently displays the manufacturer's name, along with other information. - The Atari ST is a line of home computers from Atari Corporation and the successor to the Atari 8-bit family. The initial ST model, the 520ST, saw limited release in the spring of 1985 and was widely available in July. The Atari ST is the first personal computer to come with a bit-mapped color GUI, using a version of Digital Research's GEM released in February 1985. The 1040ST, released in 1986, is the first personal computer to ship with a megabyte of RAM in the base configuration and also the first with a cost-per-kilobyte of less than US$1. - Digital hardcore is a music genre that melds hardcore punk with electronic music such as hardcore techno, industrial, breakcore and drum and bass. The style was developed in Germany during the early 1990s, and often has sociological or far-left lyrical themes. - Berlin is the capital and the largest city of Germany as well as one of its constituent 16 states. With a population of approximately 3.5 million people, Berlin is the second most populous city proper and the seventh most populous urban area in the European Union. Located in northeastern Germany on the banks of rivers Spree and Havel, it is the centre of the Berlin-Brandenburg Metropolitan Region, which has about 6 million residents from more than 180 nations. Due to its location in the European Plain, Berlin is influenced by a temperate seasonal climate. Around one-third of the city's area is composed of forests, parks, gardens, rivers and lakes. After reading the paragraphs above, choose the best answer for the entity that related to 'the future of war' with the relationship of 'record label'. Choices: - album - digital - digital hardcore recordings - european union - labels - record - record label - spring
A: digital hardcore recordings