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Theorem elima3 2608
Description: Membership in an image. Theorem 34 of [Suppes] p. 65.
Hypothesis
Ref Expression
elima.1 |- A e. V
Assertion
Ref Expression
elima3 |- (A e. (B"C) <-> E.x(x e. C /\ <.x, A>. e. B))
Distinct variable group(s):   x,A   x,B   x,C

Proof of Theorem elima3
StepHypRef Expression
1 elima.1 . . 3 |- A e. V
21elima2 2607 . 2 |- (A e. (B"C) <-> E.x(x e. C /\ xBA))
3 df-br 2063 . . . 4 |- (xBA <-> <.x, A>. e. B)
43anbi2i 367 . . 3 |- ((x e. C /\ xBA) <-> (x e. C /\ <.x, A>. e. B))
54biex 733 . 2 |- (E.x(x e. C /\ xBA) <-> E.x(x e. C /\ <.x, A>. e. B))
62, 5bitr 151 1 |- (A e. (B"C) <-> E.x(x e. C /\ <.x, A>. e. B))
Colors of variables: wff set class
Syntax hints:   <-> wb 127   /\ wa 196  E.wex 678   e. wcel 1092  Vcvv 1348  <.cop 1810   class class class wbr 2054  "cima 2413
This theorem is referenced by:  hbima 2609  elimasn 2617  imaiun 2650  dmco2 2673  tz9.12lem1 3503
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-rex 1206  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-br 2063  df-opab 2098  df-xp 2424  df-cnv 2426  df-dm 2428  df-rn 2429  df-res 2430  df-ima 2431
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