A+ CATEGORY SCIENTIFIC UNIT

Mathematical Sciences Classification System

20Mxx - Semigroups

  • 1
    20M05
    Free semigroups, generators and relations, word problems [See also 03D40, 08A50, 20F10]
  • 6
    20M07
    Varieties and pseudovarieties of semigroups
  • 20M10
    General structure theory
  • 20M11
    Radical theory
  • 1
    20M12
    Ideal theory
  • 20M13
    Arithmetic theory of monoids
  • 3
    20M14
    Commutative semigroups
  • 20M15
    Mappings of semigroups
  • 20M17
    Regular semigroups
  • 20M18
    Inverse semigroups
  • 1
    20M19
    Orthodox semigroups
  • 2
    20M20
    Semigroups of transformations, etc. [See also 47D03, 47H20, 54H15]
  • 20M25
    Semigroup rings, multiplicative semigroups of rings [See also 16S36, 16Y60]
  • 4
    20M30
    Representation of semigroups; actions of semigroups on sets
  • 2
    20M32
    Algebraic monoids
  • 5
    20M35
    Semigroups in automata theory, linguistics, etc. [See also 03D05, 68Q70, 68T50]
  • 20M50
    Connections of semigroups with homological algebra and category theory
  • 20M99
    None of the above, but in this section

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