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Theorem cnvxp 2651
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 2624 . 2 |- Rel `'(A X. B)
2 relxp 2486 . 2 |- Rel (B X. A)
3 visset 1350 . . . 4 |- x e. V
4 visset 1350 . . . 4 |- y e. V
53, 4opelcnv 2518 . . 3 |- (<.x, y>. e. `'(A X. B) <-> <.y, x>. e. (A X. B))
6 ancom 333 . . . 4 |- ((y e. A /\ x e. B) <-> (x e. B /\ y e. A))
73opelxp 2452 . . . 4 |- (<.y, x>. e. (A X. B) <-> (y e. A /\ x e. B))
84opelxp 2452 . . . 4 |- (<.x, y>. e. (B X. A) <-> (x e. B /\ y e. A))
96, 7, 83bitr4 158 . . 3 |- (<.y, x>. e. (A X. B) <-> <.x, y>. e. (B X. A))
105, 9bitr 151 . 2 |- (<.x, y>. e. `'(A X. B) <-> <.x, y>. e. (B X. A))
111, 2, 10cleqreli 2484 1 |- `'(A X. B) = (B X. A)
Colors of variables: wff set class
Syntax hints:   /\ wa 196   = wceq 1091   e. wcel 1092  <.cop 1810   X. cxp 2408  `'ccnv 2409
This theorem is referenced by:  xp0 2652  rnxp 2657  fconst 2774
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-br 2063  df-opab 2098  df-xp 2424  df-rel 2425  df-cnv 2426
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