Theorem cyggenod 18997

Description: An element is the generator of a finite group iff the order of the generator equals the order of the group. (Contributed by Mario Carneiro, 21-Apr-2016.)

Hypotheses

Ref	Expression
iscyg.1	⊢ 𝐵 = (Base‘𝐺)
iscyg.2	⊢ · = (.g‘𝐺)
iscyg3.e	⊢ 𝐸 = {𝑥 ∈ 𝐵 ∣ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑥)) = 𝐵}
cyggenod.o	⊢ 𝑂 = (od‘𝐺)

Assertion

Ref	Expression
cyggenod	⊢ ((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) → (𝑋 ∈ 𝐸 ↔ (𝑋 ∈ 𝐵 ∧ (𝑂‘𝑋) = (♯‘𝐵))))

Distinct variable groups:   𝑥,𝑛,𝐵   𝑛,𝑂   𝑛,𝑋,𝑥   𝑛,𝐺,𝑥   · ,𝑛,𝑥

Allowed substitution hints:   𝐸(𝑥,𝑛)   𝑂(𝑥)

Proof of Theorem cyggenod

Step	Hyp	Ref	Expression
1		iscyg.1	. . 3 ⊢ 𝐵 = (Base‘𝐺)
2		iscyg.2	. . 3 ⊢ · = (.g‘𝐺)
3		iscyg3.e	. . 3 ⊢ 𝐸 = {𝑥 ∈ 𝐵 ∣ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑥)) = 𝐵}
4	1, 2, 3	iscyggen 18993	. 2 ⊢ (𝑋 ∈ 𝐸 ↔ (𝑋 ∈ 𝐵 ∧ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵))
5		simplr 767	. . . . . 6 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → 𝐵 ∈ Fin)
6		simplll 773	. . . . . . . . 9 ⊢ ((((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) ∧ 𝑛 ∈ ℤ) → 𝐺 ∈ Grp)
7		simpr 487	. . . . . . . . 9 ⊢ ((((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) ∧ 𝑛 ∈ ℤ) → 𝑛 ∈ ℤ)
8		simplr 767	. . . . . . . . 9 ⊢ ((((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) ∧ 𝑛 ∈ ℤ) → 𝑋 ∈ 𝐵)
9	1, 2	mulgcl 18239	. . . . . . . . 9 ⊢ ((𝐺 ∈ Grp ∧ 𝑛 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (𝑛 · 𝑋) ∈ 𝐵)
10	6, 7, 8, 9	syl3anc 1367	. . . . . . . 8 ⊢ ((((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) ∧ 𝑛 ∈ ℤ) → (𝑛 · 𝑋) ∈ 𝐵)
11	10	fmpttd 6874	. . . . . . 7 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)):ℤ⟶𝐵)
12	11	frnd 6516	. . . . . 6 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ⊆ 𝐵)
13	5, 12	ssfid 8735	. . . . 5 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ∈ Fin)
14		hashen 13701	. . . . 5 ⊢ ((ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ∈ Fin ∧ 𝐵 ∈ Fin) → ((♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))) = (♯‘𝐵) ↔ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ≈ 𝐵))
15	13, 5, 14	syl2anc 586	. . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → ((♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))) = (♯‘𝐵) ↔ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ≈ 𝐵))
16		cyggenod.o	. . . . . . . 8 ⊢ 𝑂 = (od‘𝐺)
17		eqid 2821	. . . . . . . 8 ⊢ (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))
18	1, 16, 2, 17	dfod2 18685	. . . . . . 7 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝑂‘𝑋) = if(ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ∈ Fin, (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))), 0))
19	18	adantlr 713	. . . . . 6 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → (𝑂‘𝑋) = if(ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ∈ Fin, (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))), 0))
20	13	iftrued 4475	. . . . . 6 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → if(ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ∈ Fin, (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))), 0) = (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))))
21	19, 20	eqtr2d 2857	. . . . 5 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → (♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))) = (𝑂‘𝑋))
22	21	eqeq1d 2823	. . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → ((♯‘ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋))) = (♯‘𝐵) ↔ (𝑂‘𝑋) = (♯‘𝐵)))
23		fisseneq 8723	. . . . . . 7 ⊢ ((𝐵 ∈ Fin ∧ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ⊆ 𝐵 ∧ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ≈ 𝐵) → ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵)
24	23	3expia 1117	. . . . . 6 ⊢ ((𝐵 ∈ Fin ∧ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ⊆ 𝐵) → (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ≈ 𝐵 → ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵))
25		enrefg 8535	. . . . . . . 8 ⊢ (𝐵 ∈ Fin → 𝐵 ≈ 𝐵)
26	25	adantr 483	. . . . . . 7 ⊢ ((𝐵 ∈ Fin ∧ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ⊆ 𝐵) → 𝐵 ≈ 𝐵)
27		breq1 5062	. . . . . . 7 ⊢ (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵 → (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ≈ 𝐵 ↔ 𝐵 ≈ 𝐵))
28	26, 27	syl5ibrcom 249	. . . . . 6 ⊢ ((𝐵 ∈ Fin ∧ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ⊆ 𝐵) → (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵 → ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ≈ 𝐵))
29	24, 28	impbid 214	. . . . 5 ⊢ ((𝐵 ∈ Fin ∧ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ⊆ 𝐵) → (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ≈ 𝐵 ↔ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵))
30	5, 12, 29	syl2anc 586	. . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) ≈ 𝐵 ↔ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵))
31	15, 22, 30	3bitr3rd 312	. . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) ∧ 𝑋 ∈ 𝐵) → (ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵 ↔ (𝑂‘𝑋) = (♯‘𝐵)))
32	31	pm5.32da 581	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) → ((𝑋 ∈ 𝐵 ∧ ran (𝑛 ∈ ℤ ↦ (𝑛 · 𝑋)) = 𝐵) ↔ (𝑋 ∈ 𝐵 ∧ (𝑂‘𝑋) = (♯‘𝐵))))
33	4, 32	syl5bb 285	1 ⊢ ((𝐺 ∈ Grp ∧ 𝐵 ∈ Fin) → (𝑋 ∈ 𝐸 ↔ (𝑋 ∈ 𝐵 ∧ (𝑂‘𝑋) = (♯‘𝐵))))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1533   ∈ wcel 2110  {crab 3142   ⊆ wss 3936  ifcif 4467   class class class wbr 5059   ↦ cmpt 5139  ran crn 5551  ‘cfv 6350  (class class class)co 7150   ≈ cen 8500  Fincfn 8503  0cc0 10531  ℤcz 11975  ♯chash 13684  Basecbs 16477  Grpcgrp 18097  ._gcmg 18218  odcod 18646

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2156  ax-12 2172  ax-ext 2793  ax-rep 5183  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5322  ax-un 7455  ax-inf2 9098  ax-cnex 10587  ax-resscn 10588  ax-1cn 10589  ax-icn 10590  ax-addcl 10591  ax-addrcl 10592  ax-mulcl 10593  ax-mulrcl 10594  ax-mulcom 10595  ax-addass 10596  ax-mulass 10597  ax-distr 10598  ax-i2m1 10599  ax-1ne0 10600  ax-1rid 10601  ax-rnegex 10602  ax-rrecex 10603  ax-cnre 10604  ax-pre-lttri 10605  ax-pre-lttrn 10606  ax-pre-ltadd 10607  ax-pre-mulgt0 10608  ax-pre-sup 10609

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-reu 3145  df-rmo 3146  df-rab 3147  df-v 3497  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-pss 3954  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4562  df-pr 4564  df-tp 4566  df-op 4568  df-uni 4833  df-int 4870  df-iun 4914  df-br 5060  df-opab 5122  df-mpt 5140  df-tr 5166  df-id 5455  df-eprel 5460  df-po 5469  df-so 5470  df-fr 5509  df-se 5510  df-we 5511  df-xp 5556  df-rel 5557  df-cnv 5558  df-co 5559  df-dm 5560  df-rn 5561  df-res 5562  df-ima 5563  df-pred 6143  df-ord 6189  df-on 6190  df-lim 6191  df-suc 6192  df-iota 6309  df-fun 6352  df-fn 6353  df-f 6354  df-f1 6355  df-fo 6356  df-f1o 6357  df-fv 6358  df-isom 6359  df-riota 7108  df-ov 7153  df-oprab 7154  df-mpo 7155  df-om 7575  df-1st 7683  df-2nd 7684  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-1o 8096  df-oadd 8100  df-omul 8101  df-er 8283  df-map 8402  df-en 8504  df-dom 8505  df-sdom 8506  df-fin 8507  df-sup 8900  df-inf 8901  df-oi 8968  df-card 9362  df-acn 9365  df-pnf 10671  df-mnf 10672  df-xr 10673  df-ltxr 10674  df-le 10675  df-sub 10866  df-neg 10867  df-div 11292  df-nn 11633  df-2 11694  df-3 11695  df-n0 11892  df-z 11976  df-uz 12238  df-rp 12384  df-fz 12887  df-fl 13156  df-mod 13232  df-seq 13364  df-exp 13424  df-hash 13685  df-cj 14452  df-re 14453  df-im 14454  df-sqrt 14588  df-abs 14589  df-dvds 15602  df-0g 16709  df-mgm 17846  df-sgrp 17895  df-mnd 17906  df-grp 18100  df-minusg 18101  df-sbg 18102  df-mulg 18219  df-od 18650

This theorem is referenced by:  iscygodd  19001  cyggexb  19013