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Theorem ssxp 3256
Description: Subset theorem for cross product. Generalization of Theorem 101 of [Suppes] p. 52.
Assertion
Ref Expression
ssxp |- ((A (_ B /\ C (_ D) -> (A X. C) (_ (B X. D))

Proof of Theorem ssxp
StepHypRef Expression
1 relxp 3255 . . 3 |- Rel (A X. C)
21a1i 8 . 2 |- ((A (_ B /\ C (_ D) -> Rel (A X. C))
3 prth 556 . . . 4 |- (((x e. A -> x e. B) /\ (y e. C -> y e. D)) -> ((x e. A /\ y e. C) -> (x e. B /\ y e. D)))
4 visset 1813 . . . . 5 |- y e. V
54opelxp 3214 . . . 4 |- (<.x, y>. e. (A X. C) <-> (x e. A /\ y e. C))
64opelxp 3214 . . . 4 |- (<.x, y>. e. (B X. D) <-> (x e. B /\ y e. D))
73, 5, 63imtr4g 553 . . 3 |- (((x e. A -> x e. B) /\ (y e. C -> y e. D)) -> (<.x, y>. e. (A X. C) -> <.x, y>. e. (B X. D)))
8 ssel 2063 . . 3 |- (A (_ B -> (x e. A -> x e. B))
9 ssel 2063 . . 3 |- (C (_ D -> (y e. C -> y e. D))
107, 8, 9syl2an 454 . 2 |- ((A (_ B /\ C (_ D) -> (<.x, y>. e. (A X. C) -> <.x, y>. e. (B X. D)))
112, 10relssdv 3249 1 |- ((A (_ B /\ C (_ D) -> (A X. C) (_ (B X. D))
Colors of variables: wff set class
Syntax hints:   -> wi 3   /\ wa 223   e. wcel 958   (_ wss 2047  <.cop 2411   X. cxp 3168  Rel wrel 3175
This theorem is referenced by:  ssres2 3386  ssrnres 3481  coexg 3524  fssxp 3637  funssxp 3638  oprabss 4006  xpdom3 4445  dmaddpi 5018  dmmulpi 5019  axresscn 5268  mulnzcnopr 5702  climuz0 7108  xpnnen 7499  infxpidmlem7 7558  metreslem 7822  cncfmet 7905  remetba 7909  lmbrf 7930  iscauf 7939  iscau5 7941  iscaunns 7944  lmsslem 7952  caussi 7954  lmclimnn 7964  resgrprn 8095  issubgi 8122  ghgrpilem4 8136  sspg 8387  ssps 8389  sspmlem 8391  h2hcau 8849  h2hlm 8850  hhssabl 9132  hhssnv 9134  hhshsslem1 9137  ghomfo 10391
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  df-xp 3184  df-rel 3185
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