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Theorem rngohom1 26584
 Description: A ring homomorphism preserves . (Contributed by Jeff Madsen, 24-Jun-2011.)
Hypotheses
Ref Expression
rnghom1.1
rnghom1.2 GId
rnghom1.3
rnghom1.4 GId
Assertion
Ref Expression
rngohom1

Proof of Theorem rngohom1
Dummy variables are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2436 . . . . 5
2 rnghom1.1 . . . . 5
3 eqid 2436 . . . . 5
4 rnghom1.2 . . . . 5 GId
5 eqid 2436 . . . . 5
6 rnghom1.3 . . . . 5
7 eqid 2436 . . . . 5
8 rnghom1.4 . . . . 5 GId
91, 2, 3, 4, 5, 6, 7, 8isrngohom 26581 . . . 4
109biimpa 471 . . 3
1110simp2d 970 . 2
12113impa 1148 1
 Colors of variables: wff set class Syntax hints:   wi 4   wa 359   w3a 936   wceq 1652   wcel 1725  wral 2705   crn 4879  wf 5450  cfv 5454  (class class class)co 6081  c1st 6347  c2nd 6348  GIdcgi 21775  crngo 21963   crnghom 26576 This theorem is referenced by:  rngohomco  26590  rngoisocnv  26597 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-13 1727  ax-14 1729  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2417  ax-sep 4330  ax-nul 4338  ax-pow 4377  ax-pr 4403  ax-un 4701 This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-eu 2285  df-mo 2286  df-clab 2423  df-cleq 2429  df-clel 2432  df-nfc 2561  df-ne 2601  df-ral 2710  df-rex 2711  df-rab 2714  df-v 2958  df-sbc 3162  df-dif 3323  df-un 3325  df-in 3327  df-ss 3334  df-nul 3629  df-if 3740  df-pw 3801  df-sn 3820  df-pr 3821  df-op 3823  df-uni 4016  df-br 4213  df-opab 4267  df-id 4498  df-xp 4884  df-rel 4885  df-cnv 4886  df-co 4887  df-dm 4888  df-rn 4889  df-iota 5418  df-fun 5456  df-fn 5457  df-f 5458  df-fv 5462  df-ov 6084  df-oprab 6085  df-mpt2 6086  df-map 7020  df-rngohom 26579
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