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Theorem tposeq 8252
Description: Equality theorem for transposition. (Contributed by Mario Carneiro, 10-Sep-2015.)
Assertion
Ref Expression
tposeq (𝐹 = 𝐺 → tpos 𝐹 = tpos 𝐺)

Proof of Theorem tposeq
StepHypRef Expression
1 eqimss 4054 . . 3 (𝐹 = 𝐺𝐹𝐺)
2 tposss 8251 . . 3 (𝐹𝐺 → tpos 𝐹 ⊆ tpos 𝐺)
31, 2syl 17 . 2 (𝐹 = 𝐺 → tpos 𝐹 ⊆ tpos 𝐺)
4 eqimss2 4055 . . 3 (𝐹 = 𝐺𝐺𝐹)
5 tposss 8251 . . 3 (𝐺𝐹 → tpos 𝐺 ⊆ tpos 𝐹)
64, 5syl 17 . 2 (𝐹 = 𝐺 → tpos 𝐺 ⊆ tpos 𝐹)
73, 6eqssd 4013 1 (𝐹 = 𝐺 → tpos 𝐹 = tpos 𝐺)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1537  wss 3963  tpos ctpos 8249
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-12 2175  ax-ext 2706  ax-sep 5302  ax-nul 5312  ax-pr 5438
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-clab 2713  df-cleq 2727  df-clel 2814  df-rab 3434  df-v 3480  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-nul 4340  df-if 4532  df-sn 4632  df-pr 4634  df-op 4638  df-br 5149  df-opab 5211  df-mpt 5232  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-res 5701  df-tpos 8250
This theorem is referenced by:  tposeqd  8253  tposeqi  8283
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