Definition df-mvar

Description: Define the set of variables in a Metamath formal system. (Contributed by Mario Carneiro, 14-Jul-2016)

	Ref	Expression
Assertion	df-mvar	⊢ mVR = Slot 2

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		cmvar	⊢ mVR
1		c2	⊢ 2
2	1	cslot	⊢ Slot 2
3	0 2	wceq	⊢ mVR = Slot 2