MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  gicer Structured version   Visualization version   GIF version

Theorem gicer 19410
Description: Isomorphism is an equivalence relation on groups. (Contributed by Mario Carneiro, 21-Apr-2016.) (Proof shortened by AV, 1-May-2021.)
Assertion
Ref Expression
gicer 𝑔 Er Grp

Proof of Theorem gicer
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-gic 19393 . . . 4 𝑔 = ( GrpIso “ (V ∖ 1o))
2 cnvimass 6082 . . . . 5 ( GrpIso “ (V ∖ 1o)) ⊆ dom GrpIso
3 gimfn 19394 . . . . . 6 GrpIso Fn (Grp × Grp)
43fndmi 6640 . . . . 5 dom GrpIso = (Grp × Grp)
52, 4sseqtri 3982 . . . 4 ( GrpIso “ (V ∖ 1o)) ⊆ (Grp × Grp)
61, 5eqsstri 3980 . . 3 𝑔 ⊆ (Grp × Grp)
7 relxp 5677 . . 3 Rel (Grp × Grp)
8 relss 5766 . . 3 ( ≃𝑔 ⊆ (Grp × Grp) → (Rel (Grp × Grp) → Rel ≃𝑔 ))
96, 7, 8mp2 9 . 2 Rel ≃𝑔
10 gicsym 19408 . 2 (𝑥𝑔 𝑦𝑦𝑔 𝑥)
11 gictr 19409 . 2 ((𝑥𝑔 𝑦𝑦𝑔 𝑧) → 𝑥𝑔 𝑧)
12 gicref 19405 . . 3 (𝑥 ∈ Grp → 𝑥𝑔 𝑥)
13 giclcl 19406 . . 3 (𝑥𝑔 𝑥𝑥 ∈ Grp)
1412, 13impbii 212 . 2 (𝑥 ∈ Grp ↔ 𝑥𝑔 𝑥)
159, 10, 11, 14iseri 8728 1 𝑔 Er Grp
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wcel 2145  Vcvv 3453  cdif 3899  wss 3902   class class class wbr 5107   × cxp 5657  ccnv 5658  dom cdm 5659  cima 5662  Rel wrel 5664  1oc1o 8452   Er wer 8697  Grpcgrp 19063   GrpIso cgim 19390  𝑔 cgic 19391
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2734  ax-sep 5255  ax-nul 5267  ax-pow 5334  ax-pr 5402  ax-un 7740
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ne 2958  df-ral 3079  df-rex 3089  df-rmo 3367  df-reu 3368  df-rab 3415  df-v 3455  df-sbc 3743  df-csb 3851  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4283  df-if 4486  df-pw 4562  df-sn 4588  df-pr 4590  df-op 4594  df-uni 4871  df-iun 4956  df-br 5108  df-opab 5172  df-mpt 5191  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-ima 5672  df-suc 6367  df-iota 6493  df-fun 6539  df-fn 6540  df-f 6541  df-f1 6542  df-fo 6543  df-f1o 6544  df-fv 6545  df-riota 7374  df-ov 7420  df-oprab 7421  df-mpo 7422  df-1st 7990  df-2nd 7991  df-1o 8459  df-er 8700  df-map 8832  df-0g 17532  df-mgm 18736  df-sgrp 18827  df-mnd 18843  df-mhm 18897  df-grp 19066  df-ghm 19347  df-gim 19392  df-gic 19393
This theorem is used by: (None)
  Copyright terms: Public domain W3C validator