This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.

Metamath Proof Explorer

Theorem plendx

Description: Index value of the df-ple slot. (Contributed by Mario Carneiro, 14-Aug-2015) (Revised by AV, 9-Sep-2021) (New usage is discouraged.)

		Ref	Expression
	Assertion	plendx	$⊢ \leq_{ndx} = 10$

Step	Hyp	Ref	Expression
1		df-ple	$⊢ le = Slot 10$
2		10nn	$⊢ 10 \in ℕ$
3	1 2	ndxarg	$⊢ \leq_{ndx} = 10$