Theorem base0

Description: The base set of the empty structure. (Contributed by David A. Wheeler, 7-Jul-2016)

	Ref	Expression
Assertion	base0	$$⊢\varnothing ={\mathrm{Base}}_{\varnothing }$$

Proof

Step	Hyp	Ref	Expression
1		df-base	$$⊢\mathrm{Base}=\mathrm{Slot}1$$
2	1	str0	$$⊢\varnothing ={\mathrm{Base}}_{\varnothing }$$