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Metamath Proof Explorer

Theorem basfn

Description: The base set extractor is a function on _V . (Contributed by Stefan O'Rear, 8-Jul-2015)

		Ref	Expression
	Assertion	basfn	$⊢ Base Fn V$

Step	Hyp	Ref	Expression
1		baseid	$⊢ Base = Slot {Base}_{ndx}$
2	1	slotfn	$⊢ Base Fn V$