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Theorem ssopab2i 2120
Description: Inference of abstraction subclass from implication.
Hypothesis
Ref Expression
ssopab2i.1 |- (ph -> ps)
Assertion
Ref Expression
ssopab2i |- {<.x, y>. | ph} (_ {<.x, y>. | ps}
Distinct variable group(s):   x,y

Proof of Theorem ssopab2i
StepHypRef Expression
1 ssopab2 2119 . 2 |- ({<.x, y>. | ph} (_ {<.x, y>. | ps} <-> A.xA.y(ph -> ps))
2 ssopab2i.1 . . 3 |- (ph -> ps)
32ax-gen 677 . 2 |- A.y(ph -> ps)
41, 3mpgbir 686 1 |- {<.x, y>. | ph} (_ {<.x, y>. | ps}
Colors of variables: wff set class
Syntax hints:   -> wi 2  A.wal 672   (_ wss 1487  {copab 2055
This theorem is referenced by:  opabssxp 2468  relopab 2494  tz7.44-1 2966  tz7.44-2 2967  tz7.44-3 2968  ssoprab2i 3036  aceq3 3556  infmap2lem2 4952
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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