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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 2766 | . . . 4 ⊢ (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) = (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) | |
| 7 | 3, 4, 5, 6 | dfod2 19644 | . . 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 2772 | . . . 4 ⊢ (𝜑 → ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) = 𝐶) |
| 11 | 10 | eleq1d 2851 | . . 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 4515 | . 2 ⊢ (𝜑 → if(ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴)) ∈ Fin, (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝐴))), 0) = if(𝐶 ∈ Fin, (♯‘𝐶), 0)) |
| 14 | 8, 13 | eqtrd 2801 | 1 ⊢ (𝜑 → (𝑂‘𝐴) = if(𝐶 ∈ Fin, (♯‘𝐶), 0)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2146 ifcif 4490 ↦ cmpt 5195 ran crn 5665 ‘cfv 6540 (class class class)co 7416 Fincfn 8945 0cc0 11110 ℤcz 12601 ♯chash 14377 Basecbs 17279 Grpcgrp 19010 .gcmg 19143 odcod 19604 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5241 ax-sep 5260 ax-nul 5272 ax-pow 5339 ax-pr 5407 ax-un 7738 ax-inf2 9612 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 ax-pre-sup 11188 |
| 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 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4491 df-pw 4567 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4876 df-int 4916 df-iun 4961 df-br 5113 df-opab 5177 df-mpt 5196 df-tr 5222 df-id 5559 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-se 5618 df-we 5619 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-res 5676 df-ima 5677 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7865 df-1st 7988 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-1o 8455 df-oadd 8459 df-omul 8460 df-er 8696 df-map 8828 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-sup 9404 df-inf 9405 df-oi 9474 df-card 9936 df-acn 9939 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11453 df-neg 11454 df-div 11882 df-nn 12244 df-2 12313 df-3 12314 df-n0 12515 df-z 12602 df-uz 12873 df-rp 13027 df-fz 13546 df-fl 13836 df-mod 13914 df-seq 14049 df-exp 14109 df-hash 14378 df-cj 15161 df-re 15162 df-im 15163 df-sqrt 15297 df-abs 15298 df-dvds 16321 df-0g 17504 df-mgm 18708 df-sgrp 18787 df-mnd 18803 df-grp 19013 df-minusg 19014 df-sbg 19015 df-mulg 19144 df-od 19608 |
| This theorem is used by: ablsimpgfind 20192 fincygsubgodd 20194 |
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