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Theorem ghmabl 14062
Description: The image of an abelian group  G under a group homomorphism  F is an abelian group. (Contributed by Mario Carneiro, 12-May-2014.) (Revised by Thierry Arnoux, 26-Jan-2020.)
Hypotheses
Ref Expression
ghmabl.x  |-  X  =  ( Base `  G
)
ghmabl.y  |-  Y  =  ( Base `  H
)
ghmabl.p  |-  .+  =  ( +g  `  G )
ghmabl.q  |-  .+^  =  ( +g  `  H )
ghmabl.f  |-  ( (
ph  /\  x  e.  X  /\  y  e.  X
)  ->  ( F `  ( x  .+  y
) )  =  ( ( F `  x
)  .+^  ( F `  y ) ) )
ghmabl.1  |-  ( ph  ->  F : X -onto-> Y
)
ghmabl.3  |-  ( ph  ->  G  e.  Abel )
Assertion
Ref Expression
ghmabl  |-  ( ph  ->  H  e.  Abel )
Distinct variable groups:    x,  .+ , y    x,  .+^ , y    x, F, y   
x, G, y    x, H, y    x, X, y   
x, Y, y    ph, x, y

Proof of Theorem ghmabl
StepHypRef Expression
1 ghmabl.f . . 3  |-  ( (
ph  /\  x  e.  X  /\  y  e.  X
)  ->  ( F `  ( x  .+  y
) )  =  ( ( F `  x
)  .+^  ( F `  y ) ) )
2 ghmabl.x . . 3  |-  X  =  ( Base `  G
)
3 ghmabl.y . . 3  |-  Y  =  ( Base `  H
)
4 ghmabl.p . . 3  |-  .+  =  ( +g  `  G )
5 ghmabl.q . . 3  |-  .+^  =  ( +g  `  H )
6 ghmabl.1 . . 3  |-  ( ph  ->  F : X -onto-> Y
)
7 ghmabl.3 . . . 4  |-  ( ph  ->  G  e.  Abel )
8 ablgrp 14023 . . . 4  |-  ( G  e.  Abel  ->  G  e. 
Grp )
97, 8syl 14 . . 3  |-  ( ph  ->  G  e.  Grp )
101, 2, 3, 4, 5, 6, 9ghmgrp 13852 . 2  |-  ( ph  ->  H  e.  Grp )
11 ablcmn 14025 . . . 4  |-  ( G  e.  Abel  ->  G  e. CMnd
)
127, 11syl 14 . . 3  |-  ( ph  ->  G  e. CMnd )
132, 3, 4, 5, 1, 6, 12ghmcmn 14061 . 2  |-  ( ph  ->  H  e. CMnd )
14 isabl 14022 . 2  |-  ( H  e.  Abel  <->  ( H  e. 
Grp  /\  H  e. CMnd ) )
1510, 13, 14sylanbrc 417 1  |-  ( ph  ->  H  e.  Abel )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 1005    = wceq 1398    e. wcel 2205   -onto->wfo 5352   ` cfv 5354  (class class class)co 6052   Basecbs 13229   +g cplusg 13307   Grpcgrp 13730  CMndccmn 14018   Abelcabl 14019
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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-coll 4227  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-cnex 8220  ax-resscn 8221  ax-1re 8223  ax-addrcl 8226
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-reu 2529  df-rmo 2530  df-rab 2531  df-v 2817  df-sbc 3045  df-csb 3141  df-un 3217  df-in 3219  df-ss 3226  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-iun 3995  df-br 4112  df-opab 4174  df-mpt 4175  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-rn 4762  df-res 4763  df-ima 4764  df-iota 5314  df-fun 5356  df-fn 5357  df-f 5358  df-f1 5359  df-fo 5360  df-f1o 5361  df-fv 5362  df-riota 6005  df-ov 6055  df-inn 9240  df-2 9298  df-ndx 13232  df-slot 13233  df-base 13235  df-plusg 13320  df-0g 13488  df-mgm 13586  df-sgrp 13632  df-mnd 13647  df-grp 13733  df-minusg 13734  df-cmn 14020  df-abl 14021
This theorem is referenced by: (None)
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