Theorem ccondx

Description: Index value of the df-cco slot. (Contributed by Mario Carneiro, 7-Jan-2017) (New usage is discouraged.)

	Ref	Expression
Assertion	ccondx	⊢ ( comp ‘ ndx ) = ; 1 5

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	ndxarg	⊢ ( comp ‘ ndx ) = ; 1 5