polygonal number
Смотреть что такое "polygonal number" в других словарях:
Polygonal number — In mathematics, a polygonal number is a number that can be arranged as a regular polygon. Ancient mathematicians discovered that numbers could be arranged in certain ways when they were represented by pebbles or seeds; such numbers, which can be… … Wikipedia
polygonal number — noun : figurate number … Useful english dictionary
Centered polygonal number — The centered polygonal numbers are a class of series of figurate numbers, each formed by a central dot, surrounded by polygonal layers with a constant number of sides. Each side of a polygonal layer contains one dot more than a side in the… … Wikipedia
Fermat polygonal number theorem — In mathematics, the Fermat polygonal number theorem states: every positive integer is a sum of at most n n polygonal numbers. That is, every number can be written as the sum of at most three triangular numbers, or four square numbers, or five… … Wikipedia
number game — Introduction any of various puzzles and games that involve aspects of mathematics. Mathematical recreations comprise puzzles and games that vary from naive amusements to sophisticated problems, some of which have never been solved.… … Universalium
Number — For other uses, see Numbers (disambiguation). A number is a mathematical object used to count and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational… … Wikipedia
Polygonal rifling — is a type of rifling wherein the traditional lands and grooves are replaced by hills and valleys in a rounded polygonal pattern, usually a hexagon or octagon. HistoryWhile polygonal rifling has been around since the earliest days of rifled… … Wikipedia
Polygonal modeling — In 3D computer graphics, polygonal modeling is an approach for modeling objects by representing or approximating their surfaces using polygons. Polygonal modeling is well suited to scanline rendering and is therefore the method of choice for real … Wikipedia
Number theory — A Lehmer sieve an analog computer once used for finding primes and solving simple diophantine equations. Number theory is a branch of pure mathematics devoted primarily to the study of the integers. Number theorists study prime numbers (the… … Wikipedia
Number — (Roget s Thesaurus) < N PARAG:Number >N GRP: N 1 Sgm: N 1 number number symbol numeral figure cipher digit integer Sgm: N 1 counter counter Sgm: N 1 round number round number Sgm: N 1 formula … English dictionary for students
Triangular number — The first six triangular numbers A triangular number or triangle number numbers the objects that can form an equilateral triangle, as in the diagram on the right. The nth triangle number is the number of dots in a triangle with n dots on a side;… … Wikipedia
