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Metamath Proof Explorer

Theorem mulrndx

Description: Index value of the df-mulr slot. (Contributed by Mario Carneiro, 14-Aug-2015) (New usage is discouraged.)

		Ref	Expression
	Assertion	mulrndx	$⊢ \cdot_{ndx} = 3$

Step	Hyp	Ref	Expression
1		df-mulr	$⊢ \cdot_{𝑟} = Slot 3$
2		3nn	$⊢ 3 \in ℕ$
3	1 2	ndxarg	$⊢ \cdot_{ndx} = 3$