Theorem nfcriOLDOLDOLD

Description: Obsolete version of nfcri as of 23-May-2024. (Contributed by Mario Carneiro, 11-Aug-2016) (Proof modification is discouraged.) (New usage is discouraged.)

	Ref	Expression
Hypothesis	nfcriOLD.1	⊢ Ⅎ 𝑥 𝐴
Assertion	nfcriOLDOLDOLD	⊢ Ⅎ 𝑥 𝑦 ∈ 𝐴

Proof

Step	Hyp	Ref	Expression
1		nfcriOLD.1	⊢ Ⅎ 𝑥 𝐴
2	1	nfcrii	⊢ ( 𝑦 ∈ 𝐴 → ∀ 𝑥 𝑦 ∈ 𝐴 )
3	2	nf5i	⊢ Ⅎ 𝑥 𝑦 ∈ 𝐴