Theorem eufndx

Description: Index value of the Euclidean function slot. Use ndxarg . (Contributed by Thierry Arnoux, 22-Mar-2025) (New usage is discouraged.)

	Ref	Expression
Assertion	eufndx	Could not format assertion : No typesetting found for |- ( EuclF ` ndx ) = ; 2 1 with typecode |-

Proof

Step	Hyp	Ref	Expression
1		df-euf	Could not format EuclF = Slot ; 2 1 : No typesetting found for |- EuclF = Slot ; 2 1 with typecode |-
2		2nn0	$$⊢2\in {\mathbb{N}}_0$$
3		1nn	$$⊢1\in \mathbb{N}$$
4	2 3	decnncl	$$⊢21\in \mathbb{N}$$
5	1 4	ndxarg	Could not format ( EuclF ` ndx ) = ; 2 1 : No typesetting found for |- ( EuclF ` ndx ) = ; 2 1 with typecode |-