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| Mirrors > Home > MPE Home > Th. List > odhash | Structured version Visualization version GIF version | ||
| Description: An element of zero order generates an infinite subgroup. (Contributed by Stefan O'Rear, 12-Sep-2015.) |
| Ref | Expression |
|---|---|
| odhash.x | ⊢ 𝑋 = (Base‘𝐺) |
| odhash.o | ⊢ 𝑂 = (od‘𝐺) |
| odhash.k | ⊢ 𝐾 = (mrCls‘(SubGrp‘𝐺)) |
| Ref | Expression |
|---|---|
| odhash | ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) = 0) → (♯‘(𝐾‘{𝐴})) = +∞) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | odhash.x | . . . 4 ⊢ 𝑋 = (Base‘𝐺) | |
| 2 | eqid 2760 | . . . 4 ⊢ (.g‘𝐺) = (.g‘𝐺) | |
| 3 | odhash.o | . . . 4 ⊢ 𝑂 = (od‘𝐺) | |
| 4 | odhash.k | . . . 4 ⊢ 𝐾 = (mrCls‘(SubGrp‘𝐺)) | |
| 5 | 1, 2, 3, 4 | odf1o1 19786 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) = 0) → (𝑥 ∈ ℤ ↦ (𝑥(.g‘𝐺)𝐴)):ℤ–1-1-onto→(𝐾‘{𝐴})) |
| 6 | zex 12702 | . . . 4 ⊢ ℤ ∈ V | |
| 7 | 6 | f1oen 8999 | . . 3 ⊢ ((𝑥 ∈ ℤ ↦ (𝑥(.g‘𝐺)𝐴)):ℤ–1-1-onto→(𝐾‘{𝐴}) → ℤ ≈ (𝐾‘{𝐴})) |
| 8 | hasheni 14492 | . . 3 ⊢ (ℤ ≈ (𝐾‘{𝐴}) → (♯‘ℤ) = (♯‘(𝐾‘{𝐴}))) | |
| 9 | 5, 7, 8 | 3syl 19 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) = 0) → (♯‘ℤ) = (♯‘(𝐾‘{𝐴}))) |
| 10 | ominf 9255 | . . . 4 ⊢ ¬ ω ∈ Fin | |
| 11 | znnen 16380 | . . . . . 6 ⊢ ℤ ≈ ℕ | |
| 12 | nnenom 14123 | . . . . . 6 ⊢ ℕ ≈ ω | |
| 13 | 11, 12 | entri 9035 | . . . . 5 ⊢ ℤ ≈ ω |
| 14 | enfi 9202 | . . . . 5 ⊢ (ℤ ≈ ω → (ℤ ∈ Fin ↔ ω ∈ Fin)) | |
| 15 | 13, 14 | ax-mp 5 | . . . 4 ⊢ (ℤ ∈ Fin ↔ ω ∈ Fin) |
| 16 | 10, 15 | mtbir 326 | . . 3 ⊢ ¬ ℤ ∈ Fin |
| 17 | hashinf 14479 | . . 3 ⊢ ((ℤ ∈ V ∧ ¬ ℤ ∈ Fin) → (♯‘ℤ) = +∞) | |
| 18 | 6, 16, 17 | mp2an 705 | . 2 ⊢ (♯‘ℤ) = +∞ |
| 19 | 9, 18 | eqtr3di 2810 | 1 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) = 0) → (♯‘(𝐾‘{𝐴})) = +∞) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ w3a 1103 = wceq 1569 ∈ wcel 2144 Vcvv 3450 {csn 4583 class class class wbr 5102 ↦ cmpt 5185 –1-1-onto→wf1o 6537 ‘cfv 6538 (class class class)co 7420 ωcom 7877 ≈ cen 8970 Fincfn 8973 0cc0 11200 +∞cpnf 11340 ℕcn 12335 ℤcz 12693 ♯chash 14474 Basecbs 17387 mrClscmrc 17753 Grpcgrp 19144 .gcmg 19277 SubGrpcsubg 19330 odcod 19738 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-inf2 9642 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 ax-pre-sup 11278 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-iun 4952 df-iin 4953 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-se 5604 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-isom 6547 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-2o 8477 df-oadd 8480 df-omul 8481 df-er 8717 df-map 8849 df-en 8974 df-dom 8975 df-sdom 8976 df-fin 8977 df-sup 9434 df-inf 9435 df-oi 9504 df-card 10020 df-acn 10023 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-div 11974 df-nn 12336 df-2 12405 df-3 12406 df-n0 12607 df-z 12694 df-uz 12966 df-rp 13121 df-fz 13640 df-fl 13932 df-mod 14010 df-seq 14145 df-exp 14205 df-hash 14475 df-cj 15266 df-re 15267 df-im 15268 df-sqrt 15402 df-abs 15403 df-dvds 16423 df-sets 17342 df-slot 17360 df-ndx 17372 df-base 17388 df-ress 17409 df-plusg 17441 df-0g 17612 df-mre 17756 df-mrc 17757 df-acs 17759 df-mgm 18816 df-sgrp 18908 df-mnd 18924 df-submnd 18979 df-grp 19147 df-minusg 19148 df-sbg 19149 df-mulg 19278 df-subg 19333 df-od 19742 |
| This theorem is used by: odhash3 19790 |
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