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Theorem tposf1o 49690
Description: Condition of a bijective transposition. (Contributed by Zhi Wang, 5-Oct-2025.)
Assertion
Ref Expression
tposf1o (𝐹:(𝐴 × 𝐵)–1-1-onto𝐶 → tpos 𝐹:(𝐵 × 𝐴)–1-1-onto𝐶)

Proof of Theorem tposf1o
StepHypRef Expression
1 relxp 5679 . . 3 Rel (𝐴 × 𝐵)
2 tposf1o2 8244 . . 3 (Rel (𝐴 × 𝐵) → (𝐹:(𝐴 × 𝐵)–1-1-onto𝐶 → tpos 𝐹:(𝐴 × 𝐵)–1-1-onto𝐶))
31, 2ax-mp 5 . 2 (𝐹:(𝐴 × 𝐵)–1-1-onto𝐶 → tpos 𝐹:(𝐴 × 𝐵)–1-1-onto𝐶)
4 cnvxp 6154 . . 3 (𝐴 × 𝐵) = (𝐵 × 𝐴)
5 f1oeq2 6809 . . 3 ((𝐴 × 𝐵) = (𝐵 × 𝐴) → (tpos 𝐹:(𝐴 × 𝐵)–1-1-onto𝐶 ↔ tpos 𝐹:(𝐵 × 𝐴)–1-1-onto𝐶))
64, 5ax-mp 5 . 2 (tpos 𝐹:(𝐴 × 𝐵)–1-1-onto𝐶 ↔ tpos 𝐹:(𝐵 × 𝐴)–1-1-onto𝐶)
73, 6sylib 221 1 (𝐹:(𝐴 × 𝐵)–1-1-onto𝐶 → tpos 𝐹:(𝐵 × 𝐴)–1-1-onto𝐶)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wb 209   = wceq 1570   × cxp 5659  ccnv 5660  Rel wrel 5666  1-1-ontowf1o 6535  tpos ctpos 8217
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-sep 5257  ax-nul 5269  ax-pow 5336  ax-pr 5404  ax-un 7732
This proof depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-rab 3417  df-v 3457  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4488  df-pw 4564  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4873  df-br 5110  df-opab 5174  df-mpt 5193  df-id 5556  df-xp 5667  df-rel 5668  df-cnv 5669  df-co 5670  df-dm 5671  df-rn 5672  df-res 5673  df-ima 5674  df-iota 6492  df-fun 6538  df-fn 6539  df-f 6540  df-f1 6541  df-fo 6542  df-f1o 6543  df-fv 6544  df-1st 7982  df-2nd 7983  df-tpos 8218
This theorem is used by:  tposidf1o  49693
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