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Theorem hbopab 2111
Description: Bound-variable hypothesis builder for class abstraction.
Hypothesis
Ref Expression
hbopab.1 |- (ph -> A.zph)
Assertion
Ref Expression
hbopab |- (w e. {<.x, y>. | ph} -> A.z w e. {<.x, y>. | ph})
Distinct variable group(s):   x,y,z,w

Proof of Theorem hbopab
StepHypRef Expression
1 ax-17 925 . . . . 5 |- (w = <.x, y>. -> A.z w = <.x, y>.)
2 hbopab.1 . . . . 5 |- (ph -> A.zph)
31, 2hban 704 . . . 4 |- ((w = <.x, y>. /\ ph) -> A.z(w = <.x, y>. /\ ph))
43hbex 701 . . 3 |- (E.y(w = <.x, y>. /\ ph) -> A.zE.y(w = <.x, y>. /\ ph))
54hbex 701 . 2 |- (E.xE.y(w = <.x, y>. /\ ph) -> A.zE.xE.y(w = <.x, y>. /\ ph))
6 elopab 2110 . 2 |- (w e. {<.x, y>. | ph} <-> E.xE.y(w = <.x, y>. /\ ph))
76bial 695 . 2 |- (A.z w e. {<.x, y>. | ph} <-> A.zE.xE.y(w = <.x, y>. /\ ph))
85, 6, 73imtr4 192 1 |- (w e. {<.x, y>. | ph} -> A.z w e. {<.x, y>. | ph})
Colors of variables: wff set class
Syntax hints:   -> wi 2   /\ wa 196  A.wal 672  E.wex 678   = wceq 1091   e. wcel 1092  <.cop 1810  {copab 2055
This theorem is referenced by:  hbco 2508  hbrdg 2974  mapxpen 3390  tz9.12lem3 3505
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-clab 1093  df-cleq 1097  df-clel 1099  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-opab 2098
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