Metamath Proof Explorer


Definition df-mgm2

Description: Amagma is a set equipped with a closed operation. Definition 1 of BourbakiAlg1 p. 1, or definition of a groupoid in section I.1 of Bruck p. 1. Note: The term "groupoid" is now widely used to refer to other objects: (small) categories all of whose morphisms are invertible, or groups with a partial function replacing the binary operation. Therefore, we will only use the term "magma" for the present notion in set.mm. (Contributed by AV, 6-Jan-2020)

Ref Expression
Assertion df-mgm2 MgmALT=m|+mclLawBasem

Detailed syntax breakdown

Step Hyp Ref Expression
0 cmgm2 classMgmALT
1 vm setvarm
2 cplusg class+𝑔
3 1 cv setvarm
4 3 2 cfv class+m
5 ccllaw classclLaw
6 cbs classBase
7 3 6 cfv classBasem
8 4 7 5 wbr wff+mclLawBasem
9 8 1 cab classm|+mclLawBasem
10 0 9 wceq wffMgmALT=m|+mclLawBasem