| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > cycsubggenodd | Structured version Visualization version GIF version | ||
| Description: Relationship between the order of a subgroup and the order of a generator of the subgroup. (Contributed by Rohan Ridenour, 3-Aug-2023.) |
| Ref | Expression |
|---|---|
| cycsubggenodd.1 | ⊢ 𝐵 = (Base‘𝐺) |
| cycsubggenodd.2 | ⊢ · = (.g‘𝐺) |
| cycsubggenodd.3 | ⊢ 𝑂 = (od‘𝐺) |
| cycsubggenodd.4 | ⊢ (𝜑 → 𝐺 ∈ Grp) |
| cycsubggenodd.5 | ⊢ (𝜑 → 𝐴 ∈ 𝐵) |
| cycsubggenodd.6 | ⊢ (𝜑 → 𝐶 = ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴))) |
| Ref | Expression |
|---|---|
| cycsubggenodd | ⊢ (𝜑 → (𝑂‘𝐴) = if(𝐶 ∈ Fin, (♯‘𝐶), 0)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cycsubggenodd.4 | . . 3 ⊢ (𝜑 → 𝐺 ∈ Grp) | |
| 2 | cycsubggenodd.5 | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝐵) | |
| 3 | cycsubggenodd.1 | . . . 4 ⊢ 𝐵 = (Base‘𝐺) | |
| 4 | cycsubggenodd.3 | . . . 4 ⊢ 𝑂 = (od‘𝐺) | |
| 5 | cycsubggenodd.2 | . . . 4 ⊢ · = (.g‘𝐺) | |
| 6 | eqid 2760 | . . . 4 ⊢ (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) = (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) | |
| 7 | 3, 4, 5, 6 | dfod2 19779 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝐵) → (𝑂‘𝐴) = if(ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) ∈ Fin, (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴))), 0)) |
| 8 | 1, 2, 7 | syl2anc 596 | . 2 ⊢ (𝜑 → (𝑂‘𝐴) = if(ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) ∈ Fin, (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴))), 0)) |
| 9 | cycsubggenodd.6 | . . . . 5 ⊢ (𝜑 → 𝐶 = ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴))) | |
| 10 | 9 | eqcomd 2766 | . . . 4 ⊢ (𝜑 → ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) = 𝐶) |
| 11 | 10 | eleq1d 2845 | . . 3 ⊢ (𝜑 → (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) ∈ Fin ↔ 𝐶 ∈ Fin)) |
| 12 | 10 | fveq2d 6889 | . . 3 ⊢ (𝜑 → (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴))) = (♯‘𝐶)) |
| 13 | 11, 12 | ifbieq1d 4506 | . 2 ⊢ (𝜑 → if(ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) ∈ Fin, (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴))), 0) = if(𝐶 ∈ Fin, (♯‘𝐶), 0)) |
| 14 | 8, 13 | eqtrd 2795 | 1 ⊢ (𝜑 → (𝑂‘𝐴) = if(𝐶 ∈ Fin, (♯‘𝐶), 0)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 ifcif 4481 ↦ cmpt 5185 ran crn 5651 ‘cfv 6538 (class class class)co 7420 Fincfn 8974 0cc0 11201 ℤcz 12694 ♯chash 14475 Basecbs 17388 Grpcgrp 19145 .gcmg 19278 odcod 19739 |
| 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 9643 ax-cnex 11257 ax-resscn 11258 ax-1cn 11259 ax-icn 11260 ax-addcl 11261 ax-addrcl 11262 ax-mulcl 11263 ax-mulrcl 11264 ax-mulcom 11265 ax-addass 11266 ax-mulass 11267 ax-distr 11268 ax-i2m1 11269 ax-1ne0 11270 ax-1rid 11271 ax-rnegex 11272 ax-rrecex 11273 ax-cnre 11274 ax-pre-lttri 11275 ax-pre-lttrn 11276 ax-pre-ltadd 11277 ax-pre-mulgt0 11278 ax-pre-sup 11279 |
| 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-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 8300 df-wrecs 8331 df-recs 8380 df-rdg 8419 df-1o 8477 df-oadd 8481 df-omul 8482 df-er 8718 df-map 8850 df-en 8975 df-dom 8976 df-sdom 8977 df-fin 8978 df-sup 9435 df-inf 9436 df-oi 9505 df-card 10021 df-acn 10024 df-pnf 11346 df-mnf 11347 df-xr 11348 df-ltxr 11349 df-le 11350 df-sub 11544 df-neg 11545 df-div 11975 df-nn 12337 df-2 12406 df-3 12407 df-n0 12608 df-z 12695 df-uz 12967 df-rp 13122 df-fz 13641 df-fl 13933 df-mod 14011 df-seq 14146 df-exp 14206 df-hash 14476 df-cj 15267 df-re 15268 df-im 15269 df-sqrt 15403 df-abs 15404 df-dvds 16424 df-0g 17613 df-mgm 18817 df-sgrp 18909 df-mnd 18925 df-grp 19148 df-minusg 19149 df-sbg 19150 df-mulg 19279 df-od 19743 |
| This theorem is used by: ablsimpgfind 20327 fincygsubgodd 20329 |
| Copyright terms: Public domain | W3C validator |