Theorem rspc2va 2715

Description: 2-variable restricted specialization, using implicit substitution. (Contributed by NM, 18-Jun-2014.)

Hypotheses

Ref	Expression
rspc2v.1	|- ( x = A -> ( ph <-> ch ) )
rspc2v.2	|- ( y = B -> ( ch <-> ps ) )

Assertion

Ref	Expression
rspc2va	|- ( ( ( A e. C /\ B e. D ) /\ A. x e. C A. y e. D ph ) -> ps )

Distinct variable groups:   x, y, A   y, B   x, C   x, D, y   ch, x   ps, y

Allowed substitution hints:   ph( x, y)   ps( x)   ch( y)   B( x)   C( y)

Proof of Theorem rspc2va

Step	Hyp	Ref	Expression
1		rspc2v.1	. . 3 |- ( x = A -> ( ph <-> ch ) )
2		rspc2v.2	. . 3 |- ( y = B -> ( ch <-> ps ) )
3	1, 2	rspc2v 2714	. 2 |- ( ( A e. C /\ B e. D ) -> ( A. x e. C A. y e. D ph -> ps ) )
4	3	imp 122	1 |- ( ( ( A e. C /\ B e. D ) /\ A. x e. C A. y e. D ph ) -> ps )

Syntax hints:   -> wi 4   /\ wa 102   <-> wb 103   = wceq 1285   e. wcel 1434   A.wral 2349

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 663  ax-5 1377  ax-7 1378  ax-gen 1379  ax-ie1 1423  ax-ie2 1424  ax-8 1436  ax-10 1437  ax-11 1438  ax-i12 1439  ax-bndl 1440  ax-4 1441  ax-17 1460  ax-i9 1464  ax-ial 1468  ax-i5r 1469  ax-ext 2064

This theorem depends on definitions:  df-bi 115  df-tru 1288  df-nf 1391  df-sb 1687  df-clab 2069  df-cleq 2075  df-clel 2078  df-nfc 2209  df-ral 2354  df-v 2604

This theorem is referenced by:  swopo  4063  ordtri2orexmid  4268  onsucelsucexmid  4275  ordsucunielexmid  4276  ordtri2or2exmid  4316  isocnv  5476  isotr  5481  off  5749  caofrss  5760  iseqoveq  9529  iseqcaopr2  9546  iseqdistr  9556  isprm6  10659