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Theorem cnvxp 3464
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 3435 . 2 |- Rel `'(A X. B)
2 relxp 3255 . 2 |- Rel (B X. A)
3 visset 1813 . . . 4 |- x e. V
4 visset 1813 . . . 4 |- y e. V
53, 4opelcnv 3298 . . 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 3214 . . . 4 |- (<.y, x>. e. (A X. B) <-> (y e. A /\ x e. B))
84opelxp 3214 . . . 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 3251 1 |- `'(A X. B) = (B X. A)
Colors of variables: wff set class
Syntax hints:   /\ wa 223   = wceq 956   e. wcel 958  <.cop 2411   X. cxp 3168  `'ccnv 3169
This theorem is referenced by:  xp0 3465  rnxp 3472  dminxp 3483
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-br 2620  df-opab 2667  df-xp 3184  df-rel 3185  df-cnv 3186
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