Theorem starvid

Description: Utility theorem: index-independent form of df-starv . (Contributed by Mario Carneiro, 6-Oct-2013)

	Ref	Expression
Assertion	starvid	⊢ *𝑟 = Slot ( *𝑟 ‘ ndx )

Proof

Step	Hyp	Ref	Expression
1		df-starv	⊢ *𝑟 = Slot 4
2		4nn	⊢ 4 ∈ ℕ
3	1 2	ndxid	⊢ *𝑟 = Slot ( *𝑟 ‘ ndx )