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Theorem prtlem19 26718
 Description: Lemma for prter2 26721. (Contributed by Rodolfo Medina, 15-Oct-2010.) (Revised by Mario Carneiro, 12-Aug-2015.)
Hypothesis
Ref Expression
prtlem18.1
Assertion
Ref Expression
prtlem19
Distinct variable groups:   ,,,,,   , ,
Allowed substitution hints:   (,,)

Proof of Theorem prtlem19
Dummy variable is distinct from all other variables.
StepHypRef Expression
1 prtlem18.1 . . . . . 6
21prtlem18 26717 . . . . 5
32imp 419 . . . 4
4 vex 2951 . . . . 5
5 vex 2951 . . . . 5
64, 5elec 6936 . . . 4
73, 6syl6bbr 255 . . 3
87eqrdv 2433 . 2
98ex 424 1
 Colors of variables: wff set class Syntax hints:   wi 4   wb 177   wa 359   wceq 1652   wcel 1725  wrex 2698   class class class wbr 4204  copab 4257  cec 6895   wprt 26711 This theorem is referenced by:  prter2  26721 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-14 1729  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2416  ax-sep 4322  ax-nul 4330  ax-pr 4395 This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-eu 2284  df-mo 2285  df-clab 2422  df-cleq 2428  df-clel 2431  df-nfc 2560  df-ne 2600  df-ral 2702  df-rex 2703  df-rab 2706  df-v 2950  df-sbc 3154  df-dif 3315  df-un 3317  df-in 3319  df-ss 3326  df-nul 3621  df-if 3732  df-sn 3812  df-pr 3813  df-op 3815  df-br 4205  df-opab 4259  df-xp 4876  df-cnv 4878  df-dm 4880  df-rn 4881  df-res 4882  df-ima 4883  df-ec 6899  df-prt 26712
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