Mathlib Map

Structures · Algebra

CommSemigroup

A commutative semigroup is a type with an associative commutative (*).

Defined in
Mathlib.Algebra.Group.Defs
Shape
One type argument · adds mul_comm

Extends2

Extended by2

Concrete types that are instances31

  • Int
  • Nat
  • Real
  • Rat
  • SeparationQuotient
  • Filter.Germ
  • LocallyConstant
  • DomMulAct
  • DirectLimit
  • Zsqrtd
  • SetSemiring
  • Tropical
  • UpperSet
  • LowerSet
  • RingCon.Quotient
  • Complex.UnitDisc
  • Con.Quotient
  • Subtype
  • Prod
  • OrderDual
  • Set.Elem
  • ULift
  • MulOpposite
  • Fin
  • Lex
  • AddOpposite
  • ContinuousMap
  • Shrink
  • Colex
  • Multiplicative
  • WithZero

How is a type an instance?

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Assumed by101

Ancestors9