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Theorem grpodivcl 21684
Description: Closure of group division (or subtraction) operation. (Contributed by NM, 15-Feb-2008.) (New usage is discouraged.)
Hypotheses
Ref Expression
grpdivf.1  |-  X  =  ran  G
grpdivf.3  |-  D  =  (  /g  `  G
)
Assertion
Ref Expression
grpodivcl  |-  ( ( G  e.  GrpOp  /\  A  e.  X  /\  B  e.  X )  ->  ( A D B )  e.  X )

Proof of Theorem grpodivcl
StepHypRef Expression
1 grpdivf.1 . . 3  |-  X  =  ran  G
2 grpdivf.3 . . 3  |-  D  =  (  /g  `  G
)
31, 2grpodivf 21683 . 2  |-  ( G  e.  GrpOp  ->  D :
( X  X.  X
) --> X )
4 fovrn 6156 . 2  |-  ( ( D : ( X  X.  X ) --> X  /\  A  e.  X  /\  B  e.  X
)  ->  ( A D B )  e.  X
)
53, 4syl3an1 1217 1  |-  ( ( G  e.  GrpOp  /\  A  e.  X  /\  B  e.  X )  ->  ( A D B )  e.  X )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 936    = wceq 1649    e. wcel 1717    X. cxp 4817   ran crn 4820   -->wf 5391   ` cfv 5395  (class class class)co 6021   GrpOpcgr 21623    /g cgs 21626
This theorem is referenced by:  grpodivdiv  21685  grponpncan  21692  grpodiveq  21693  ablomuldiv  21726  ablodivdiv4  21728  ablonnncan  21730  ablonnncan1  21732  ghgrp  21805  ablo4pnp  26247  ghomdiv  26251  grpokerinj  26252  dmncan1  26378
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 2369  ax-rep 4262  ax-sep 4272  ax-nul 4280  ax-pow 4319  ax-pr 4345  ax-un 4642
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 2243  df-mo 2244  df-clab 2375  df-cleq 2381  df-clel 2384  df-nfc 2513  df-ne 2553  df-ral 2655  df-rex 2656  df-reu 2657  df-rab 2659  df-v 2902  df-sbc 3106  df-csb 3196  df-dif 3267  df-un 3269  df-in 3271  df-ss 3278  df-nul 3573  df-if 3684  df-pw 3745  df-sn 3764  df-pr 3765  df-op 3767  df-uni 3959  df-iun 4038  df-br 4155  df-opab 4209  df-mpt 4210  df-id 4440  df-xp 4825  df-rel 4826  df-cnv 4827  df-co 4828  df-dm 4829  df-rn 4830  df-res 4831  df-ima 4832  df-iota 5359  df-fun 5397  df-fn 5398  df-f 5399  df-f1 5400  df-fo 5401  df-f1o 5402  df-fv 5403  df-ov 6024  df-oprab 6025  df-mpt2 6026  df-1st 6289  df-2nd 6290  df-riota 6486  df-grpo 21628  df-gid 21629  df-ginv 21630  df-gdiv 21631
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