Mathematical Sciences Classification System
20Mxx - Semigroups
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20M05
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20M07Varieties and pseudovarieties of semigroups
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20M10General structure theory
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20M11Radical theory
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20M12Ideal theory
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20M13Arithmetic theory of monoids
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20M14Commutative semigroups
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20M15Mappings of semigroups
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20M17Regular semigroups
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20M18Inverse semigroups
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20M19Orthodox semigroups
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20M20
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20M25
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20M30Representation of semigroups; actions of semigroups on sets
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20M32Algebraic monoids
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20M35
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20M50Connections of semigroups with homological algebra and category theory
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20M99None of the above, but in this section