Metamath Proof Explorer


Definition df-plusg

Description: Define group operation. In the context of less restrictive structures, this operation is also called magma, semigroup or monoid operation. (Contributed by NM, 4-Sep-2011) (Revised by Mario Carneiro, 14-Aug-2015) Use its index-independent form plusgid instead. (New usage is discouraged.)

Ref Expression
Assertion df-plusg +𝑔=Slot2

Detailed syntax breakdown

Step Hyp Ref Expression
0 cplusg class+𝑔
1 c2 class2
2 1 cslot classSlot2
3 0 2 wceq wff+𝑔=Slot2