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	$$⊢\mathrm{mVR}=\mathrm{Slot}2$$

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		cmvar	$$class\mathrm{mVR}$$
1		c2	$$class2$$
2	1	cslot	$$class\mathrm{Slot}2$$
3	0 2	wceq	$$wff\mathrm{mVR}=\mathrm{Slot}2$$