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Mirrors > Home > MPE Home > Th. List > cyggic | Structured version Visualization version GIF version |
Description: Cyclic groups are isomorphic precisely when they have the same order. (Contributed by Mario Carneiro, 21-Apr-2016.) |
Ref | Expression |
---|---|
cygctb.b | ⊢ 𝐵 = (Base‘𝐺) |
cygctb.c | ⊢ 𝐶 = (Base‘𝐻) |
Ref | Expression |
---|---|
cyggic | ⊢ ((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) → (𝐺 ≃𝑔 𝐻 ↔ 𝐵 ≈ 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cygctb.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
2 | cygctb.c | . . 3 ⊢ 𝐶 = (Base‘𝐻) | |
3 | 1, 2 | gicen 18891 | . 2 ⊢ (𝐺 ≃𝑔 𝐻 → 𝐵 ≈ 𝐶) |
4 | eqid 2740 | . . . . . 6 ⊢ if(𝐵 ∈ Fin, (♯‘𝐵), 0) = if(𝐵 ∈ Fin, (♯‘𝐵), 0) | |
5 | eqid 2740 | . . . . . 6 ⊢ (ℤ/nℤ‘if(𝐵 ∈ Fin, (♯‘𝐵), 0)) = (ℤ/nℤ‘if(𝐵 ∈ Fin, (♯‘𝐵), 0)) | |
6 | 1, 4, 5 | cygzn 20776 | . . . . 5 ⊢ (𝐺 ∈ CycGrp → 𝐺 ≃𝑔 (ℤ/nℤ‘if(𝐵 ∈ Fin, (♯‘𝐵), 0))) |
7 | 6 | ad2antrr 723 | . . . 4 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → 𝐺 ≃𝑔 (ℤ/nℤ‘if(𝐵 ∈ Fin, (♯‘𝐵), 0))) |
8 | enfi 8955 | . . . . . . . 8 ⊢ (𝐵 ≈ 𝐶 → (𝐵 ∈ Fin ↔ 𝐶 ∈ Fin)) | |
9 | 8 | adantl 482 | . . . . . . 7 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → (𝐵 ∈ Fin ↔ 𝐶 ∈ Fin)) |
10 | hasheni 14060 | . . . . . . . 8 ⊢ (𝐵 ≈ 𝐶 → (♯‘𝐵) = (♯‘𝐶)) | |
11 | 10 | adantl 482 | . . . . . . 7 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → (♯‘𝐵) = (♯‘𝐶)) |
12 | 9, 11 | ifbieq1d 4489 | . . . . . 6 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → if(𝐵 ∈ Fin, (♯‘𝐵), 0) = if(𝐶 ∈ Fin, (♯‘𝐶), 0)) |
13 | 12 | fveq2d 6775 | . . . . 5 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → (ℤ/nℤ‘if(𝐵 ∈ Fin, (♯‘𝐵), 0)) = (ℤ/nℤ‘if(𝐶 ∈ Fin, (♯‘𝐶), 0))) |
14 | eqid 2740 | . . . . . . . 8 ⊢ if(𝐶 ∈ Fin, (♯‘𝐶), 0) = if(𝐶 ∈ Fin, (♯‘𝐶), 0) | |
15 | eqid 2740 | . . . . . . . 8 ⊢ (ℤ/nℤ‘if(𝐶 ∈ Fin, (♯‘𝐶), 0)) = (ℤ/nℤ‘if(𝐶 ∈ Fin, (♯‘𝐶), 0)) | |
16 | 2, 14, 15 | cygzn 20776 | . . . . . . 7 ⊢ (𝐻 ∈ CycGrp → 𝐻 ≃𝑔 (ℤ/nℤ‘if(𝐶 ∈ Fin, (♯‘𝐶), 0))) |
17 | 16 | ad2antlr 724 | . . . . . 6 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → 𝐻 ≃𝑔 (ℤ/nℤ‘if(𝐶 ∈ Fin, (♯‘𝐶), 0))) |
18 | gicsym 18888 | . . . . . 6 ⊢ (𝐻 ≃𝑔 (ℤ/nℤ‘if(𝐶 ∈ Fin, (♯‘𝐶), 0)) → (ℤ/nℤ‘if(𝐶 ∈ Fin, (♯‘𝐶), 0)) ≃𝑔 𝐻) | |
19 | 17, 18 | syl 17 | . . . . 5 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → (ℤ/nℤ‘if(𝐶 ∈ Fin, (♯‘𝐶), 0)) ≃𝑔 𝐻) |
20 | 13, 19 | eqbrtrd 5101 | . . . 4 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → (ℤ/nℤ‘if(𝐵 ∈ Fin, (♯‘𝐵), 0)) ≃𝑔 𝐻) |
21 | gictr 18889 | . . . 4 ⊢ ((𝐺 ≃𝑔 (ℤ/nℤ‘if(𝐵 ∈ Fin, (♯‘𝐵), 0)) ∧ (ℤ/nℤ‘if(𝐵 ∈ Fin, (♯‘𝐵), 0)) ≃𝑔 𝐻) → 𝐺 ≃𝑔 𝐻) | |
22 | 7, 20, 21 | syl2anc 584 | . . 3 ⊢ (((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) ∧ 𝐵 ≈ 𝐶) → 𝐺 ≃𝑔 𝐻) |
23 | 22 | ex 413 | . 2 ⊢ ((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) → (𝐵 ≈ 𝐶 → 𝐺 ≃𝑔 𝐻)) |
24 | 3, 23 | impbid2 225 | 1 ⊢ ((𝐺 ∈ CycGrp ∧ 𝐻 ∈ CycGrp) → (𝐺 ≃𝑔 𝐻 ↔ 𝐵 ≈ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1542 ∈ wcel 2110 ifcif 4465 class class class wbr 5079 ‘cfv 6432 ≈ cen 8713 Fincfn 8716 0cc0 10872 ♯chash 14042 Basecbs 16910 ≃𝑔 cgic 18872 CycGrpccyg 19475 ℤ/nℤczn 20702 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-rep 5214 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-inf2 9377 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 ax-pre-sup 10950 ax-addf 10951 ax-mulf 10952 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4846 df-int 4886 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-se 5546 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-isom 6441 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-1st 7824 df-2nd 7825 df-tpos 8033 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-1o 8288 df-oadd 8292 df-omul 8293 df-er 8481 df-ec 8483 df-qs 8487 df-map 8600 df-en 8717 df-dom 8718 df-sdom 8719 df-fin 8720 df-sup 9179 df-inf 9180 df-oi 9247 df-card 9698 df-acn 9701 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-dec 12437 df-uz 12582 df-rp 12730 df-fz 13239 df-fl 13510 df-mod 13588 df-seq 13720 df-exp 13781 df-hash 14043 df-cj 14808 df-re 14809 df-im 14810 df-sqrt 14944 df-abs 14945 df-dvds 15962 df-struct 16846 df-sets 16863 df-slot 16881 df-ndx 16893 df-base 16911 df-ress 16940 df-plusg 16973 df-mulr 16974 df-starv 16975 df-sca 16976 df-vsca 16977 df-ip 16978 df-tset 16979 df-ple 16980 df-ds 16982 df-unif 16983 df-0g 17150 df-imas 17217 df-qus 17218 df-mgm 18324 df-sgrp 18373 df-mnd 18384 df-mhm 18428 df-grp 18578 df-minusg 18579 df-sbg 18580 df-mulg 18699 df-subg 18750 df-nsg 18751 df-eqg 18752 df-ghm 18830 df-gim 18873 df-gic 18874 df-od 19134 df-cmn 19386 df-abl 19387 df-cyg 19476 df-mgp 19719 df-ur 19736 df-ring 19783 df-cring 19784 df-oppr 19860 df-dvdsr 19881 df-rnghom 19957 df-subrg 20020 df-lmod 20123 df-lss 20192 df-lsp 20232 df-sra 20432 df-rgmod 20433 df-lidl 20434 df-rsp 20435 df-2idl 20501 df-cnfld 20596 df-zring 20669 df-zrh 20703 df-zn 20706 |
This theorem is referenced by: (None) |
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