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Theorem isghm3 14934
Description: Property of a group homomorphism, similar to ismhm 14667. (Contributed by Mario Carneiro, 7-Mar-2015.)
Hypotheses
Ref Expression
isghm.w  |-  X  =  ( Base `  S
)
isghm.x  |-  Y  =  ( Base `  T
)
isghm.a  |-  .+  =  ( +g  `  S )
isghm.b  |-  .+^  =  ( +g  `  T )
Assertion
Ref Expression
isghm3  |-  ( ( S  e.  Grp  /\  T  e.  Grp )  ->  ( F  e.  ( S  GrpHom  T )  <->  ( F : X --> Y  /\  A. u  e.  X  A. v  e.  X  ( F `  ( u  .+  v ) )  =  ( ( F `  u )  .+^  ( F `
 v ) ) ) ) )
Distinct variable groups:    v, u, S    u, T, v    u, X, v    u,  .+ , v    u, Y, v    u,  .+^ , v    u, F, v

Proof of Theorem isghm3
StepHypRef Expression
1 isghm.w . . 3  |-  X  =  ( Base `  S
)
2 isghm.x . . 3  |-  Y  =  ( Base `  T
)
3 isghm.a . . 3  |-  .+  =  ( +g  `  S )
4 isghm.b . . 3  |-  .+^  =  ( +g  `  T )
51, 2, 3, 4isghm 14933 . 2  |-  ( F  e.  ( S  GrpHom  T )  <->  ( ( S  e.  Grp  /\  T  e.  Grp )  /\  ( F : X --> Y  /\  A. u  e.  X  A. v  e.  X  ( F `  ( u  .+  v ) )  =  ( ( F `  u )  .+^  ( F `
 v ) ) ) ) )
65baib 872 1  |-  ( ( S  e.  Grp  /\  T  e.  Grp )  ->  ( F  e.  ( S  GrpHom  T )  <->  ( F : X --> Y  /\  A. u  e.  X  A. v  e.  X  ( F `  ( u  .+  v ) )  =  ( ( F `  u )  .+^  ( F `
 v ) ) ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 177    /\ wa 359    = wceq 1649    e. wcel 1717   A.wral 2649   -->wf 5390   ` cfv 5394  (class class class)co 6020   Basecbs 13396   +g cplusg 13456   Grpcgrp 14612    GrpHom cghm 14930
This theorem is referenced by:  dfrhm2  15748
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1552  ax-5 1563  ax-17 1623  ax-9 1661  ax-8 1682  ax-13 1719  ax-14 1721  ax-6 1736  ax-7 1741  ax-11 1753  ax-12 1939  ax-ext 2368  ax-rep 4261  ax-sep 4271  ax-nul 4279  ax-pow 4318  ax-pr 4344  ax-un 4641
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1325  df-ex 1548  df-nf 1551  df-sb 1656  df-eu 2242  df-mo 2243  df-clab 2374  df-cleq 2380  df-clel 2383  df-nfc 2512  df-ne 2552  df-ral 2654  df-rex 2655  df-reu 2656  df-rab 2658  df-v 2901  df-sbc 3105  df-csb 3195  df-dif 3266  df-un 3268  df-in 3270  df-ss 3277  df-nul 3572  df-if 3683  df-pw 3744  df-sn 3763  df-pr 3764  df-op 3766  df-uni 3958  df-iun 4037  df-br 4154  df-opab 4208  df-mpt 4209  df-id 4439  df-xp 4824  df-rel 4825  df-cnv 4826  df-co 4827  df-dm 4828  df-rn 4829  df-res 4830  df-ima 4831  df-iota 5358  df-fun 5396  df-fn 5397  df-f 5398  df-f1 5399  df-fo 5400  df-f1o 5401  df-fv 5402  df-ov 6023  df-oprab 6024  df-mpt2 6025  df-ghm 14931
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