Theorem ndalli-P7.17.RC.VR 884

Description: ndalli-P7.17.RC 883 with variable restriction. †

'𝑦' cannot occur in '𝜑'.

Hypothesis

Ref	Expression
ndalli-P7.17.RC.VR.1	⊢ [𝑦 / 𝑥]𝜑

Assertion

Ref	Expression
ndalli-P7.17.RC.VR	⊢ ∀𝑥𝜑

Distinct variable groups:   𝜑,𝑦   𝑥,𝑦

Proof of Theorem ndalli-P7.17.RC.VR

Step	Hyp	Ref	Expression
1		ndnfrv-P7.1 826	. 2 ⊢ Ⅎ𝑦𝜑
2		ndalli-P7.17.RC.VR.1	. 2 ⊢ [𝑦 / 𝑥]𝜑
3	1, 2	ndalli-P7.17.RC 883	1 ⊢ ∀𝑥𝜑

Syntax hints:  term-obj 1  ∀wff-forall 8  [wff-psub 714

This theorem was proved from axioms:  ax-L1 11  ax-L2 12  ax-L3 13  ax-MP 14  ax-GEN 15  ax-L4 16  ax-L5 17  ax-L6 18  ax-L7 19  ax-L10 27  ax-L11 28  ax-L12 29

This theorem depends on definitions:  df-bi-D2.1 107  df-and-D2.2 133  df-or-D2.3 145  df-true-D2.4 155  df-rcp-AND3 161  df-exists-D5.1 596  df-nfree-D6.1 682  df-psub-D6.2 716

This theorem is referenced by: (None)