In mathematics, the four-spiral semigroup is a special semigroup generated by four idempotent elements. This special semigroup was first studied by Karl...
8 KB (933 words) - 19:49, 10 April 2020
In mathematics, the bicyclic semigroup is an algebraic object important for the structure theory of semigroups. Although it is in fact a monoid, it is...
9 KB (1,162 words) - 01:36, 20 December 2023
partitions of 12 white objects and 3 black ones 1915 = number of nonisomorphic semigroups of order 5 1916 = sum of first 50 composite numbers 1917 = number of partitions...
158 KB (25,900 words) - 13:44, 15 August 2024
rings and fields are important in algebraic coding theory; discrete semigroups and monoids appear in the theory of formal languages. There are many concepts...
26 KB (2,768 words) - 18:44, 17 August 2024
Sapir – Russian-American mathematician working in geometric group theory, semigroup theory and combinatorial algebra, Centennial Professor of Mathematics...
312 KB (30,965 words) - 17:34, 8 August 2024