| 20-XX |
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|
Group theory and generalizations |
|
20Mxx |
|
Semigroups |
|
|
20M05 |
Free semigroups, generators and relations, word problems [See also 03D40, 08A50, 20F10] |
|
|
20M07 |
Varieties and pseudovarieties of semigroups |
|
|
20M10 |
General structure theory for semigroups |
|
|
20M11 |
Radical theory for semigroups |
|
|
20M12 |
Ideal theory for semigroups |
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|
20M13 |
Arithmetic theory of semigroups |
|
|
20M14 |
Commutative semigroups |
|
|
20M15 |
Mappings of semigroups |
|
|
20M17 |
Regular semigroups |
|
|
20M18 |
Inverse semigroups |
|
|
20M19 |
Orthodox semigroups |
|
|
20M20 |
Semigroups of transformations, relations, partitions, etc. [See also 47D03, 47H20, 54H15] |
|
|
20M25 |
Semigroup rings, multiplicative semigroups of rings [See also 16S36, 16Y60] |
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|
20M30 |
Representation of semigroups; actions of semigroups on sets |
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|
20M32 |
Algebraic monoids |
|
|
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 |
