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| Mirrors > Home > MPE Home > Th. List > oppggic | Structured version Visualization version GIF version | ||
| Description: Every group is (naturally) isomorphic to its opposite. (Contributed by Stefan O'Rear, 26-Aug-2015.) |
| Ref | Expression |
|---|---|
| oppggic.o | ⊢ 𝑂 = (oppg‘𝐺) |
| Ref | Expression |
|---|---|
| oppggic | ⊢ (𝐺 ∈ Grp → 𝐺 ≃𝑔 𝑂) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oppggic.o | . . 3 ⊢ 𝑂 = (oppg‘𝐺) | |
| 2 | eqid 2737 | . . 3 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
| 3 | 1, 2 | invoppggim 19301 | . 2 ⊢ (𝐺 ∈ Grp → (invg‘𝐺) ∈ (𝐺 GrpIso 𝑂)) |
| 4 | brgici 19212 | . 2 ⊢ ((invg‘𝐺) ∈ (𝐺 GrpIso 𝑂) → 𝐺 ≃𝑔 𝑂) | |
| 5 | 3, 4 | syl 17 | 1 ⊢ (𝐺 ∈ Grp → 𝐺 ≃𝑔 𝑂) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 class class class wbr 5100 ‘cfv 6500 (class class class)co 7368 Grpcgrp 18875 invgcminusg 18876 GrpIso cgim 19198 ≃𝑔 cgic 19199 oppgcoppg 19286 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-tpos 8178 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-er 8645 df-map 8777 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-2 12220 df-sets 17103 df-slot 17121 df-ndx 17133 df-base 17149 df-plusg 17202 df-0g 17373 df-mgm 18577 df-sgrp 18656 df-mnd 18672 df-grp 18878 df-minusg 18879 df-ghm 19154 df-gim 19200 df-gic 19201 df-oppg 19287 |
| This theorem is referenced by: (None) |
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