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| 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 2737 | . . . 4 ⊢ (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) = (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) | |
| 7 | 3, 4, 5, 6 | dfod2 19505 | . . 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 585 | . 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 2743 | . . . 4 ⊢ (𝜑 → ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) = 𝐶) |
| 11 | 10 | eleq1d 2822 | . . 3 ⊢ (𝜑 → (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) ∈ Fin ↔ 𝐶 ∈ Fin)) |
| 12 | 10 | fveq2d 6846 | . . 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 2772 | 1 ⊢ (𝜑 → (𝑂‘𝐴) = if(𝐶 ∈ Fin, (♯‘𝐶), 0)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ifcif 4481 ↦ cmpt 5181 ran crn 5633 ‘cfv 6500 (class class class)co 7368 Fincfn 8895 0cc0 11038 ℤcz 12500 ♯chash 14265 Basecbs 17148 Grpcgrp 18875 .gcmg 19009 odcod 19465 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-inf2 9562 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-int 4905 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-se 5586 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-isom 6509 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-oadd 8411 df-omul 8412 df-er 8645 df-map 8777 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-sup 9357 df-inf 9358 df-oi 9427 df-card 9863 df-acn 9866 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-div 11807 df-nn 12158 df-2 12220 df-3 12221 df-n0 12414 df-z 12501 df-uz 12764 df-rp 12918 df-fz 13436 df-fl 13724 df-mod 13802 df-seq 13937 df-exp 13997 df-hash 14266 df-cj 15034 df-re 15035 df-im 15036 df-sqrt 15170 df-abs 15171 df-dvds 16192 df-0g 17373 df-mgm 18577 df-sgrp 18656 df-mnd 18672 df-grp 18878 df-minusg 18879 df-sbg 18880 df-mulg 19010 df-od 19469 |
| This theorem is referenced by: ablsimpgfind 20053 fincygsubgodd 20055 |
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