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Mirrors > Home > MPE Home > Th. List > cayley | Structured version Visualization version GIF version |
Description: Cayley's Theorem (constructive version): given group 𝐺, 𝐹 is an isomorphism between 𝐺 and the subgroup 𝑆 of the symmetric group 𝐻 on the underlying set 𝑋 of 𝐺. See also Theorem 3.15 in [Rotman] p. 42. (Contributed by Paul Chapman, 3-Mar-2008.) (Proof shortened by Mario Carneiro, 13-Jan-2015.) |
Ref | Expression |
---|---|
cayley.x | ⊢ 𝑋 = (Base‘𝐺) |
cayley.h | ⊢ 𝐻 = (SymGrp‘𝑋) |
cayley.p | ⊢ + = (+g‘𝐺) |
cayley.f | ⊢ 𝐹 = (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔 + 𝑎))) |
cayley.s | ⊢ 𝑆 = ran 𝐹 |
Ref | Expression |
---|---|
cayley | ⊢ (𝐺 ∈ Grp → (𝑆 ∈ (SubGrp‘𝐻) ∧ 𝐹 ∈ (𝐺 GrpHom (𝐻 ↾s 𝑆)) ∧ 𝐹:𝑋–1-1-onto→𝑆)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cayley.s | . . 3 ⊢ 𝑆 = ran 𝐹 | |
2 | cayley.x | . . . . 5 ⊢ 𝑋 = (Base‘𝐺) | |
3 | cayley.p | . . . . 5 ⊢ + = (+g‘𝐺) | |
4 | eqid 2610 | . . . . 5 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
5 | cayley.h | . . . . 5 ⊢ 𝐻 = (SymGrp‘𝑋) | |
6 | eqid 2610 | . . . . 5 ⊢ (Base‘𝐻) = (Base‘𝐻) | |
7 | cayley.f | . . . . 5 ⊢ 𝐹 = (𝑔 ∈ 𝑋 ↦ (𝑎 ∈ 𝑋 ↦ (𝑔 + 𝑎))) | |
8 | 2, 3, 4, 5, 6, 7 | cayleylem1 17655 | . . . 4 ⊢ (𝐺 ∈ Grp → 𝐹 ∈ (𝐺 GrpHom 𝐻)) |
9 | ghmrn 17496 | . . . 4 ⊢ (𝐹 ∈ (𝐺 GrpHom 𝐻) → ran 𝐹 ∈ (SubGrp‘𝐻)) | |
10 | 8, 9 | syl 17 | . . 3 ⊢ (𝐺 ∈ Grp → ran 𝐹 ∈ (SubGrp‘𝐻)) |
11 | 1, 10 | syl5eqel 2692 | . 2 ⊢ (𝐺 ∈ Grp → 𝑆 ∈ (SubGrp‘𝐻)) |
12 | 1 | eqimss2i 3623 | . . . 4 ⊢ ran 𝐹 ⊆ 𝑆 |
13 | eqid 2610 | . . . . 5 ⊢ (𝐻 ↾s 𝑆) = (𝐻 ↾s 𝑆) | |
14 | 13 | resghm2b 17501 | . . . 4 ⊢ ((𝑆 ∈ (SubGrp‘𝐻) ∧ ran 𝐹 ⊆ 𝑆) → (𝐹 ∈ (𝐺 GrpHom 𝐻) ↔ 𝐹 ∈ (𝐺 GrpHom (𝐻 ↾s 𝑆)))) |
15 | 11, 12, 14 | sylancl 693 | . . 3 ⊢ (𝐺 ∈ Grp → (𝐹 ∈ (𝐺 GrpHom 𝐻) ↔ 𝐹 ∈ (𝐺 GrpHom (𝐻 ↾s 𝑆)))) |
16 | 8, 15 | mpbid 221 | . 2 ⊢ (𝐺 ∈ Grp → 𝐹 ∈ (𝐺 GrpHom (𝐻 ↾s 𝑆))) |
17 | 2, 3, 4, 5, 6, 7 | cayleylem2 17656 | . . . 4 ⊢ (𝐺 ∈ Grp → 𝐹:𝑋–1-1→(Base‘𝐻)) |
18 | f1f1orn 6061 | . . . 4 ⊢ (𝐹:𝑋–1-1→(Base‘𝐻) → 𝐹:𝑋–1-1-onto→ran 𝐹) | |
19 | 17, 18 | syl 17 | . . 3 ⊢ (𝐺 ∈ Grp → 𝐹:𝑋–1-1-onto→ran 𝐹) |
20 | f1oeq3 6042 | . . . 4 ⊢ (𝑆 = ran 𝐹 → (𝐹:𝑋–1-1-onto→𝑆 ↔ 𝐹:𝑋–1-1-onto→ran 𝐹)) | |
21 | 1, 20 | ax-mp 5 | . . 3 ⊢ (𝐹:𝑋–1-1-onto→𝑆 ↔ 𝐹:𝑋–1-1-onto→ran 𝐹) |
22 | 19, 21 | sylibr 223 | . 2 ⊢ (𝐺 ∈ Grp → 𝐹:𝑋–1-1-onto→𝑆) |
23 | 11, 16, 22 | 3jca 1235 | 1 ⊢ (𝐺 ∈ Grp → (𝑆 ∈ (SubGrp‘𝐻) ∧ 𝐹 ∈ (𝐺 GrpHom (𝐻 ↾s 𝑆)) ∧ 𝐹:𝑋–1-1-onto→𝑆)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ w3a 1031 = wceq 1475 ∈ wcel 1977 ⊆ wss 3540 ↦ cmpt 4643 ran crn 5039 –1-1→wf1 5801 –1-1-onto→wf1o 5803 ‘cfv 5804 (class class class)co 6549 Basecbs 15695 ↾s cress 15696 +gcplusg 15768 0gc0g 15923 Grpcgrp 17245 SubGrpcsubg 17411 GrpHom cghm 17480 SymGrpcsymg 17620 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-1st 7059 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-oadd 7451 df-er 7629 df-map 7746 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-nn 10898 df-2 10956 df-3 10957 df-4 10958 df-5 10959 df-6 10960 df-7 10961 df-8 10962 df-9 10963 df-n0 11170 df-z 11255 df-uz 11564 df-fz 12198 df-struct 15697 df-ndx 15698 df-slot 15699 df-base 15700 df-sets 15701 df-ress 15702 df-plusg 15781 df-tset 15787 df-0g 15925 df-mgm 17065 df-sgrp 17107 df-mnd 17118 df-mhm 17158 df-submnd 17159 df-grp 17248 df-minusg 17249 df-sbg 17250 df-subg 17414 df-ghm 17481 df-ga 17546 df-symg 17621 |
This theorem is referenced by: cayleyth 17658 |
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