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Theorem txprel 35860
Description: A tail Cartesian product is a relationship. (Contributed by Scott Fenton, 31-Mar-2012.)
Assertion
Ref Expression
txprel Rel (𝐴𝐵)

Proof of Theorem txprel
StepHypRef Expression
1 txpss3v 35859 . . 3 (𝐴𝐵) ⊆ (V × (V × V))
2 xpss 5704 . . 3 (V × (V × V)) ⊆ (V × V)
31, 2sstri 4004 . 2 (𝐴𝐵) ⊆ (V × V)
4 df-rel 5695 . 2 (Rel (𝐴𝐵) ↔ (𝐴𝐵) ⊆ (V × V))
53, 4mpbir 231 1 Rel (𝐴𝐵)
Colors of variables: wff setvar class
Syntax hints:  Vcvv 3477  wss 3962   × cxp 5686  Rel wrel 5693  ctxp 35811
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1791  ax-4 1805  ax-5 1907  ax-6 1964  ax-7 2004  ax-8 2107  ax-9 2115  ax-ext 2705  ax-sep 5301  ax-nul 5311  ax-pr 5437
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1539  df-fal 1549  df-ex 1776  df-sb 2062  df-clab 2712  df-cleq 2726  df-clel 2813  df-ral 3059  df-rex 3068  df-rab 3433  df-v 3479  df-dif 3965  df-un 3967  df-in 3969  df-ss 3979  df-nul 4339  df-if 4531  df-sn 4631  df-pr 4633  df-op 4637  df-br 5148  df-opab 5210  df-xp 5694  df-rel 5695  df-cnv 5696  df-co 5697  df-res 5700  df-txp 35835
This theorem is referenced by:  pprodss4v  35865
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