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 | + m clLaw Base m

Detailed syntax breakdown

Step Hyp Ref Expression
0 cmgm2 class MgmALT
1 vm setvar m
2 cplusg class + 𝑔
3 1 cv setvar m
4 3 2 cfv class + m
5 ccllaw class clLaw
6 cbs class Base
7 3 6 cfv class Base m
8 4 7 5 wbr wff + m clLaw Base m
9 8 1 cab class m | + m clLaw Base m
10 0 9 wceq wff MgmALT = m | + m clLaw Base m