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Theorem isghmd 19157
Description: Deduction for a group homomorphism. (Contributed by Stefan O'Rear, 4-Feb-2015.)
Hypotheses
Ref Expression
isghmd.x 𝑋 = (Base‘𝑆)
isghmd.y 𝑌 = (Base‘𝑇)
isghmd.a + = (+g𝑆)
isghmd.b = (+g𝑇)
isghmd.s (𝜑𝑆 ∈ Grp)
isghmd.t (𝜑𝑇 ∈ Grp)
isghmd.f (𝜑𝐹:𝑋𝑌)
isghmd.l ((𝜑 ∧ (𝑥𝑋𝑦𝑋)) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)))
Assertion
Ref Expression
isghmd (𝜑𝐹 ∈ (𝑆 GrpHom 𝑇))
Distinct variable groups:   𝜑,𝑥,𝑦   𝑥,𝐹,𝑦   𝑥,𝑆,𝑦   𝑥,𝑇,𝑦   𝑥, + ,𝑦   𝑥, ,𝑦   𝑥,𝑋,𝑦   𝑥,𝑌,𝑦

Proof of Theorem isghmd
StepHypRef Expression
1 isghmd.s . 2 (𝜑𝑆 ∈ Grp)
2 isghmd.t . 2 (𝜑𝑇 ∈ Grp)
3 isghmd.f . . 3 (𝜑𝐹:𝑋𝑌)
4 isghmd.l . . . 4 ((𝜑 ∧ (𝑥𝑋𝑦𝑋)) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)))
54ralrimivva 3180 . . 3 (𝜑 → ∀𝑥𝑋𝑦𝑋 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)))
63, 5jca 511 . 2 (𝜑 → (𝐹:𝑋𝑌 ∧ ∀𝑥𝑋𝑦𝑋 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦))))
7 isghmd.x . . 3 𝑋 = (Base‘𝑆)
8 isghmd.y . . 3 𝑌 = (Base‘𝑇)
9 isghmd.a . . 3 + = (+g𝑆)
10 isghmd.b . . 3 = (+g𝑇)
117, 8, 9, 10isghm 19147 . 2 (𝐹 ∈ (𝑆 GrpHom 𝑇) ↔ ((𝑆 ∈ Grp ∧ 𝑇 ∈ Grp) ∧ (𝐹:𝑋𝑌 ∧ ∀𝑥𝑋𝑦𝑋 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)))))
121, 2, 6, 11syl21anbrc 1345 1 (𝜑𝐹 ∈ (𝑆 GrpHom 𝑇))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1540  wcel 2109  wral 3044  wf 6507  cfv 6511  (class class class)co 7387  Basecbs 17179  +gcplusg 17220  Grpcgrp 18865   GrpHom cghm 19144
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-sep 5251  ax-nul 5261  ax-pow 5320  ax-pr 5387  ax-un 7711
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-rab 3406  df-v 3449  df-sbc 3754  df-csb 3863  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-pw 4565  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4872  df-iun 4957  df-br 5108  df-opab 5170  df-mpt 5189  df-id 5533  df-xp 5644  df-rel 5645  df-cnv 5646  df-co 5647  df-dm 5648  df-rn 5649  df-res 5650  df-ima 5651  df-iota 6464  df-fun 6513  df-fn 6514  df-f 6515  df-fv 6519  df-ov 7390  df-oprab 7391  df-mpo 7392  df-1st 7968  df-2nd 7969  df-map 8801  df-ghm 19145
This theorem is referenced by:  ghmmhmb  19159  resghm  19164  conjghm  19181  qusghm  19187  ghmqusnsg  19214  ghmquskerlem3  19218  invoppggim  19292  galactghm  19334  pj1ghm  19633  frgpup1  19705  mulgghm  19758  ghmfghm  19760  invghm  19763  ghmplusg  19776  ringlghm  20221  ringrghm  20222  isrnghmd  20360  isrhmd  20397  lmodvsghm  20829  pwssplit2  20967  rngqiprngghm  21209  cygznlem3  21479  psgnghm  21489  frlmup1  21707  asclghm  21792  evlslem1  21989  mat1ghm  22370  scmatghm  22420  mat2pmatghm  22617  pm2mpghm  22703  reefgim  26360  lmodvslmhm  32990  imasghm  33326  qqhghm  33978  aks6d1c6isolem2  42163  frlmsnic  42528  mplmapghm  42544  imasgim  43089  amgmlemALT  49792
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