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Theorem hbopab 2812
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 groups:   x,z,w   y,z,w

Proof of Theorem hbopab
StepHypRef Expression
1 ax-17 971 . . . . 5 |- (w = <.x, y>. -> A.z w = <.x, y>.)
2 hbopab.1 . . . . 5 |- (ph -> A.zph)
31, 2hban 1009 . . . 4 |- ((w = <.x, y>. /\ ph) -> A.z(w = <.x, y>. /\ ph))
43hbex 1006 . . 3 |- (E.y(w = <.x, y>. /\ ph) -> A.zE.y(w = <.x, y>. /\ ph))
54hbex 1006 . 2 |- (E.xE.y(w = <.x, y>. /\ ph) -> A.zE.xE.y(w = <.x, y>. /\ ph))
6 elopab 2811 . 2 |- (w e. {<.x, y>. | ph} <-> E.xE.y(w = <.x, y>. /\ ph))
76albii 999 . 2 |- (A.z w e. {<.x, y>. | ph} <-> A.zE.xE.y(w = <.x, y>. /\ ph))
85, 6, 73imtr4 219 1 |- (w e. {<.x, y>. | ph} -> A.z w e. {<.x, y>. | ph})
Colors of variables: wff set class
Syntax hints:   -> wi 3   /\ wa 223  A.wal 954   = wceq 956   e. wcel 958  E.wex 980  <.cop 2411  {copab 2666
This theorem is referenced by:  hbco 3287  hbrdg 3936  mapxpen 4495  tz9.12lem3 4661  hbsum 6984
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 962  ax-gen 963  ax-8 964  ax-10 966  ax-11 967  ax-12 968  ax-13 969  ax-14 970  ax-17 971  ax-4 973  ax-5o 975  ax-6o 978  ax-9o 1123  ax-10o 1140  ax-16 1210  ax-11o 1218  ax-ext 1459  ax-sep 2703  ax-pow 2742  ax-pr 2779
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-ex 981  df-sb 1172  df-eu 1382  df-mo 1383  df-clab 1464  df-cleq 1469  df-clel 1472  df-ne 1587  df-v 1812  df-dif 2049  df-un 2050  df-in 2051  df-ss 2053  df-nul 2281  df-pw 2402  df-sn 2412  df-pr 2413  df-op 2416  df-opab 2667
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