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Theorem ghmfghm 19901
Description: The function fulfilling the conditions of ghmgrp 19133 is a group homomorphism. (Contributed by Thierry Arnoux, 26-Jan-2020.)
Hypotheses
Ref Expression
ghmabl.x 𝑋 = (Base‘𝐺)
ghmabl.y 𝑌 = (Base‘𝐻)
ghmabl.p + = (+g𝐺)
ghmabl.q = (+g𝐻)
ghmabl.f ((𝜑𝑥𝑋𝑦𝑋) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)))
ghmabl.1 (𝜑𝐹:𝑋onto𝑌)
ghmfghm.3 (𝜑𝐺 ∈ Grp)
Assertion
Ref Expression
ghmfghm (𝜑𝐹 ∈ (𝐺 GrpHom 𝐻))
Distinct variable groups:   𝑥, + ,𝑦   𝑥, ,𝑦   𝑥,𝐹,𝑦   𝑥,𝐺,𝑦   𝑥,𝐻,𝑦   𝑥,𝑋,𝑦   𝑥,𝑌,𝑦   𝜑,𝑥,𝑦

Proof of Theorem ghmfghm
StepHypRef Expression
1 ghmabl.x . 2 𝑋 = (Base‘𝐺)
2 ghmabl.y . 2 𝑌 = (Base‘𝐻)
3 ghmabl.p . 2 + = (+g𝐺)
4 ghmabl.q . 2 = (+g𝐻)
5 ghmfghm.3 . 2 (𝜑𝐺 ∈ Grp)
6 ghmabl.f . . 3 ((𝜑𝑥𝑋𝑦𝑋) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)))
7 ghmabl.1 . . 3 (𝜑𝐹:𝑋onto𝑌)
86, 1, 2, 3, 4, 7, 5ghmgrp 19133 . 2 (𝜑𝐻 ∈ Grp)
9 fof 6794 . . 3 (𝐹:𝑋onto𝑌𝐹:𝑋𝑌)
107, 9syl 18 . 2 (𝜑𝐹:𝑋𝑌)
1163expb 1138 . 2 ((𝜑 ∧ (𝑥𝑋𝑦𝑋)) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)))
121, 2, 3, 4, 5, 8, 10, 11isghmd 19296 1 (𝜑𝐹 ∈ (𝐺 GrpHom 𝐻))
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1103   = wceq 1570  wcel 2143  wf 6534  ontowfo 6536  cfv 6538  (class class class)co 7412  Basecbs 17270  +gcplusg 17311  Grpcgrp 19001   GrpHom cghm 19284
This theorem was proved from 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 5258  ax-nul 5270  ax-pow 5338  ax-pr 5406  ax-un 7734
This theorem 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-rmo 3369  df-reu 3370  df-rab 3417  df-v 3457  df-sbc 3746  df-csb 3855  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4288  df-if 4489  df-pw 4565  df-sn 4591  df-pr 4593  df-op 4597  df-uni 4874  df-iun 4959  df-br 5111  df-opab 5175  df-mpt 5194  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-rn 5674  df-res 5675  df-ima 5676  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-fo 6544  df-fv 6546  df-riota 7369  df-ov 7415  df-oprab 7416  df-mpo 7417  df-1st 7987  df-2nd 7988  df-map 8827  df-0g 17495  df-mgm 18699  df-sgrp 18778  df-mnd 18794  df-grp 19004  df-minusg 19005  df-ghm 19285
This theorem is referenced by: (None)
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