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Theorem ssoprab2i 3036
Description: Inference of operation abstraction subclass from implication.
Hypothesis
Ref Expression
ssoprab2i.1 |- (ph -> ps)
Assertion
Ref Expression
ssoprab2i |- {<.<.x, y>., z>. | ph} (_ {<.<.x, y>., z>. | ps}
Distinct variable group(s):   x,y,z

Proof of Theorem ssoprab2i
StepHypRef Expression
1 ssoprab2i.1 . . . . . 6 |- (ph -> ps)
21anim2i 270 . . . . 5 |- ((w = <.x, y>. /\ ph) -> (w = <.x, y>. /\ ps))
3219.22i 723 . . . 4 |- (E.y(w = <.x, y>. /\ ph) -> E.y(w = <.x, y>. /\ ps))
4319.22i 723 . . 3 |- (E.xE.y(w = <.x, y>. /\ ph) -> E.xE.y(w = <.x, y>. /\ ps))
54ssopab2i 2120 . 2 |- {<.w, z>. | E.xE.y(w = <.x, y>. /\ ph)} (_ {<.w, z>. | E.xE.y(w = <.x, y>. /\ ps)}
6 dfoprab2 3021 . 2 |- {<.<.x, y>., z>. | ph} = {<.w, z>. | E.xE.y(w = <.x, y>. /\ ph)}
7 dfoprab2 3021 . 2 |- {<.<.x, y>., z>. | ps} = {<.w, z>. | E.xE.y(w = <.x, y>. /\ ps)}
85, 6, 73sstr4 1539 1 |- {<.<.x, y>., z>. | ph} (_ {<.<.x, y>., z>. | ps}
Colors of variables: wff set class
Syntax hints:   -> wi 2   /\ wa 196  E.wex 678   = wceq 1091   (_ wss 1487  <.cop 1810  {copab 2055  {copab2 3002
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  df-oprab 3004
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