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Theorem rspc2va 2657
Description: 2-variable restricted specialization, using implicit substitution. (Contributed by NM, 18-Jun-2014.)
Hypotheses
Ref Expression
rspc2v.1
rspc2v.2
Assertion
Ref Expression
rspc2va  C  D  C  D
Distinct variable groups:   ,,   ,   , C   , D,   ,   ,
Allowed substitution hints:   (,)   ()   ()   ()    C()

Proof of Theorem rspc2va
StepHypRef Expression
1 rspc2v.1 . . 3
2 rspc2v.2 . . 3
31, 2rspc2v 2656 . 2  C  D  C  D
43imp 115 1  C  D  C  D
Colors of variables: wff set class
Syntax hints:   wi 4   wa 97   wb 98   wceq 1242   wcel 1390  wral 2300
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 629  ax-5 1333  ax-7 1334  ax-gen 1335  ax-ie1 1379  ax-ie2 1380  ax-8 1392  ax-10 1393  ax-11 1394  ax-i12 1395  ax-bndl 1396  ax-4 1397  ax-17 1416  ax-i9 1420  ax-ial 1424  ax-i5r 1425  ax-ext 2019
This theorem depends on definitions:  df-bi 110  df-tru 1245  df-nf 1347  df-sb 1643  df-clab 2024  df-cleq 2030  df-clel 2033  df-nfc 2164  df-ral 2305  df-v 2553
This theorem is referenced by:  swopo  4034  ordtri2orexmid  4211  onsucelsucexmid  4215  ordsucunielexmid  4216  isocnv  5394  isotr  5399  off  5666  caofrss  5677
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