Theorem ccoid

Description: Utility theorem: index-independent form of df-cco . (Contributed by Mario Carneiro, 7-Jan-2017)

	Ref	Expression
Assertion	ccoid	⊢ comp = Slot ( comp ‘ ndx )

Proof

Step	Hyp	Ref	Expression
1		df-cco	⊢ comp = Slot ; 1 5
2		1nn0	⊢ 1 ∈ ℕ0
3		5nn	⊢ 5 ∈ ℕ
4	2 3	decnncl	⊢ ; 1 5 ∈ ℕ
5	1 4	ndxid	⊢ comp = Slot ( comp ‘ ndx )