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| Mirrors > Home > MPE Home > Th. List > giccyg | Structured version Visualization version GIF version | ||
| Description: Cyclicity is a group property, i.e. it is preserved under isomorphism. (Contributed by Mario Carneiro, 21-Apr-2016.) |
| Ref | Expression |
|---|---|
| giccyg | ⊢ (𝐺 ≃𝑔 𝐻 → (𝐺 ∈ CycGrp → 𝐻 ∈ CycGrp)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | brgic 19477 | . 2 ⊢ (𝐺 ≃𝑔 𝐻 ↔ (𝐺 GrpIso 𝐻) ≠ ∅) | |
| 2 | n0 4300 | . . 3 ⊢ ((𝐺 GrpIso 𝐻) ≠ ∅ ↔ ∃𝑓 𝑓 ∈ (𝐺 GrpIso 𝐻)) | |
| 3 | gimghm 19471 | . . . . 5 ⊢ (𝑓 ∈ (𝐺 GrpIso 𝐻) → 𝑓 ∈ (𝐺 GrpHom 𝐻)) | |
| 4 | eqid 2761 | . . . . . . 7 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 5 | eqid 2761 | . . . . . . 7 ⊢ (Base‘𝐻) = (Base‘𝐻) | |
| 6 | 4, 5 | gimf1o 19470 | . . . . . 6 ⊢ (𝑓 ∈ (𝐺 GrpIso 𝐻) → 𝑓:(Base‘𝐺)–1-1-onto→(Base‘𝐻)) |
| 7 | f1ofo 6830 | . . . . . 6 ⊢ (𝑓:(Base‘𝐺)–1-1-onto→(Base‘𝐻) → 𝑓:(Base‘𝐺)–onto→(Base‘𝐻)) | |
| 8 | 6, 7 | syl 18 | . . . . 5 ⊢ (𝑓 ∈ (𝐺 GrpIso 𝐻) → 𝑓:(Base‘𝐺)–onto→(Base‘𝐻)) |
| 9 | 4, 5 | ghmcyg 20103 | . . . . 5 ⊢ ((𝑓 ∈ (𝐺 GrpHom 𝐻) ∧ 𝑓:(Base‘𝐺)–onto→(Base‘𝐻)) → (𝐺 ∈ CycGrp → 𝐻 ∈ CycGrp)) |
| 10 | 3, 8, 9 | syl2anc 596 | . . . 4 ⊢ (𝑓 ∈ (𝐺 GrpIso 𝐻) → (𝐺 ∈ CycGrp → 𝐻 ∈ CycGrp)) |
| 11 | 10 | exlimiv 1963 | . . 3 ⊢ (∃𝑓 𝑓 ∈ (𝐺 GrpIso 𝐻) → (𝐺 ∈ CycGrp → 𝐻 ∈ CycGrp)) |
| 12 | 2, 11 | sylbi 220 | . 2 ⊢ ((𝐺 GrpIso 𝐻) ≠ ∅ → (𝐺 ∈ CycGrp → 𝐻 ∈ CycGrp)) |
| 13 | 1, 12 | sylbi 220 | 1 ⊢ (𝐺 ≃𝑔 𝐻 → (𝐺 ∈ CycGrp → 𝐻 ∈ CycGrp)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∃wex 1812 ∈ wcel 2145 ≠ wne 2956 ∅c0 4279 class class class wbr 5103 –onto→wfo 6535 –1-1-onto→wf1o 6536 ‘cfv 6537 (class class class)co 7418 Basecbs 17380 GrpHom cghm 19420 GrpIso cgim 19464 ≃𝑔 cgic 19465 CycGrpccyg 20084 |
| 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 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-cnex 11249 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 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 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-om 7876 df-1st 7999 df-2nd 8000 df-frecs 8292 df-wrecs 8323 df-recs 8372 df-rdg 8411 df-1o 8469 df-er 8710 df-map 8842 df-en 8967 df-dom 8968 df-sdom 8969 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-nn 12329 df-n0 12600 df-z 12687 df-uz 12959 df-fz 13633 df-seq 14138 df-0g 17605 df-mgm 18809 df-sgrp 18901 df-mnd 18917 df-mhm 18971 df-grp 19140 df-minusg 19141 df-mulg 19271 df-ghm 19421 df-gim 19466 df-gic 19467 df-cyg 20085 |
| This theorem is used by: cygth 21870 |
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