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Theorem f1ovscpbl 12895
Description: An injection is compatible with any operations on the base set. (Contributed by Mario Carneiro, 15-Aug-2015.)
Hypothesis
Ref Expression
f1ocpbl.f (𝜑𝐹:𝑉1-1-onto𝑋)
Assertion
Ref Expression
f1ovscpbl ((𝜑 ∧ (𝐴𝐾𝐵𝑉𝐶𝑉)) → ((𝐹𝐵) = (𝐹𝐶) → (𝐹‘(𝐴 + 𝐵)) = (𝐹‘(𝐴 + 𝐶))))

Proof of Theorem f1ovscpbl
StepHypRef Expression
1 f1ocpbl.f . . . . 5 (𝜑𝐹:𝑉1-1-onto𝑋)
2 f1of1 5499 . . . . 5 (𝐹:𝑉1-1-onto𝑋𝐹:𝑉1-1𝑋)
31, 2syl 14 . . . 4 (𝜑𝐹:𝑉1-1𝑋)
43adantr 276 . . 3 ((𝜑 ∧ (𝐴𝐾𝐵𝑉𝐶𝑉)) → 𝐹:𝑉1-1𝑋)
5 simpr2 1006 . . 3 ((𝜑 ∧ (𝐴𝐾𝐵𝑉𝐶𝑉)) → 𝐵𝑉)
6 simpr3 1007 . . 3 ((𝜑 ∧ (𝐴𝐾𝐵𝑉𝐶𝑉)) → 𝐶𝑉)
7 f1fveq 5815 . . 3 ((𝐹:𝑉1-1𝑋 ∧ (𝐵𝑉𝐶𝑉)) → ((𝐹𝐵) = (𝐹𝐶) ↔ 𝐵 = 𝐶))
84, 5, 6, 7syl12anc 1247 . 2 ((𝜑 ∧ (𝐴𝐾𝐵𝑉𝐶𝑉)) → ((𝐹𝐵) = (𝐹𝐶) ↔ 𝐵 = 𝐶))
9 oveq2 5926 . . 3 (𝐵 = 𝐶 → (𝐴 + 𝐵) = (𝐴 + 𝐶))
109fveq2d 5558 . 2 (𝐵 = 𝐶 → (𝐹‘(𝐴 + 𝐵)) = (𝐹‘(𝐴 + 𝐶)))
118, 10biimtrdi 163 1 ((𝜑 ∧ (𝐴𝐾𝐵𝑉𝐶𝑉)) → ((𝐹𝐵) = (𝐹𝐶) → (𝐹‘(𝐴 + 𝐵)) = (𝐹‘(𝐴 + 𝐶))))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wb 105  w3a 980   = wceq 1364  wcel 2164  1-1wf1 5251  1-1-ontowf1o 5253  cfv 5254  (class class class)co 5918
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-14 2167  ax-ext 2175  ax-sep 4147  ax-pow 4203  ax-pr 4238
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1472  df-sb 1774  df-eu 2045  df-mo 2046  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-ral 2477  df-rex 2478  df-v 2762  df-sbc 2986  df-un 3157  df-in 3159  df-ss 3166  df-pw 3603  df-sn 3624  df-pr 3625  df-op 3627  df-uni 3836  df-br 4030  df-opab 4091  df-id 4324  df-xp 4665  df-rel 4666  df-cnv 4667  df-co 4668  df-dm 4669  df-iota 5215  df-fun 5256  df-fn 5257  df-f 5258  df-f1 5259  df-f1o 5261  df-fv 5262  df-ov 5921
This theorem is referenced by: (None)
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