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Metamath Proof Explorer

Theorem ax6evr

Description: A commuted form of ax6ev . (Contributed by BJ, 7-Dec-2020)

		Ref	Expression
	Assertion	ax6evr	⊢ ∃ 𝑥 𝑦 = 𝑥

Step	Hyp	Ref	Expression
1		ax6ev	⊢ ∃ 𝑥 𝑥 = 𝑦
2		equcomiv	⊢ ( 𝑥 = 𝑦 → 𝑦 = 𝑥 )
3	1 2	eximii	⊢ ∃ 𝑥 𝑦 = 𝑥