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Theorem cnvxp 3460
Description: The converse of a cross product. Exercise 11 of [Suppes] p. 67.
Assertion
Ref Expression
cnvxp |- `'(A X. B) = (B X. A)

Proof of Theorem cnvxp
StepHypRef Expression
1 relcnv 3431 . 2 |- Rel `'(A X. B)
2 relxp 3251 . 2 |- Rel (B X. A)
3 visset 1810 . . . 4 |- x e. V
4 visset 1810 . . . 4 |- y e. V
53, 4opelcnv 3294 . . 3 |- (<.x, y>. e. `'(A X. B) <-> <.y, x>. e. (A X. B))
6 ancom 435 . . . 4 |- ((y e. A /\ x e. B) <-> (x e. B /\ y e. A))
73opelxp 3210 . . . 4 |- (<.y, x>. e. (A X. B) <-> (y e. A /\ x e. B))
84opelxp 3210 . . . 4 |- (<.x, y>. e. (B X. A) <-> (x e. B /\ y e. A))
96, 7, 83bitr4 183 . . 3 |- (<.y, x>. e. (A X. B) <-> <.x, y>. e. (B X. A))
105, 9bitr 173 . 2 |- (<.x, y>. e. `'(A X. B) <-> <.x, y>. e. (B X. A))
111, 2, 10eqrelriv 3247 1 |- `'(A X. B) = (B X. A)
Colors of variables: wff set class
Syntax hints:   /\ wa 223   = wceq 955   e. wcel 957  <.cop 2408   X. cxp 3164  `'ccnv 3165
This theorem is referenced by:  xp0 3461  rnxp 3468  dminxp 3479
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 961  ax-gen 962  ax-8 963  ax-10 965  ax-11 966  ax-12 967  ax-13 968  ax-14 969  ax-17 970  ax-4 972  ax-5o 974  ax-6o 977  ax-9o 1122  ax-10o 1139  ax-16 1209  ax-11o 1217  ax-ext 1458  ax-sep 2699  ax-pow 2738  ax-pr 2775
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-ex 980  df-sb 1171  df-eu 1381  df-mo 1382  df-clab 1463  df-cleq 1468  df-clel 1471  df-ne 1585  df-v 1809  df-dif 2046  df-un 2047  df-in 2048  df-ss 2050  df-nul 2278  df-pw 2399  df-sn 2409  df-pr 2410  df-op 2413  df-br 2616  df-opab 2663  df-xp 3180  df-rel 3181  df-cnv 3182
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