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Mirrors > Home > MPE Home > Th. List > gimfn | Structured version Visualization version GIF version |
Description: The group isomorphism function is a well-defined function. (Contributed by Mario Carneiro, 23-Aug-2015.) |
Ref | Expression |
---|---|
gimfn | ⊢ GrpIso Fn (Grp × Grp) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-gim 18856 | . 2 ⊢ GrpIso = (𝑠 ∈ Grp, 𝑡 ∈ Grp ↦ {𝑔 ∈ (𝑠 GrpHom 𝑡) ∣ 𝑔:(Base‘𝑠)–1-1-onto→(Base‘𝑡)}) | |
2 | ovex 7301 | . . 3 ⊢ (𝑠 GrpHom 𝑡) ∈ V | |
3 | 2 | rabex 5259 | . 2 ⊢ {𝑔 ∈ (𝑠 GrpHom 𝑡) ∣ 𝑔:(Base‘𝑠)–1-1-onto→(Base‘𝑡)} ∈ V |
4 | 1, 3 | fnmpoi 7896 | 1 ⊢ GrpIso Fn (Grp × Grp) |
Colors of variables: wff setvar class |
Syntax hints: {crab 3069 × cxp 5586 Fn wfn 6425 –1-1-onto→wf1o 6429 ‘cfv 6430 (class class class)co 7268 Basecbs 16893 Grpcgrp 18558 GrpHom cghm 18812 GrpIso cgim 18854 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-sep 5226 ax-nul 5233 ax-pr 5355 ax-un 7579 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-ral 3070 df-rex 3071 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-nul 4262 df-if 4465 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-id 5488 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-fv 6438 df-ov 7271 df-oprab 7272 df-mpo 7273 df-1st 7817 df-2nd 7818 df-gim 18856 |
This theorem is referenced by: brgic 18866 gicer 18873 |
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