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 = Slot 2

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		cplusg	|- +g
1		c2	|- 2
2	1	cslot	|- Slot 2
3	0 2	wceq	|- +g = Slot 2