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Theorem odzcllem 12244

Description: - Lemma for odzcl 12245, showing existence of a recurrent point for the exponential. (Contributed by Mario Carneiro, 28-Feb-2014.) (Proof shortened by AV, 26-Sep-2020.)

**Assertion**
Ref	Expression
odzcllem	⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (((od_ℤ‘𝑁)‘𝐴) ∈ ℕ ∧ 𝑁 ∥ ((𝐴↑((od_ℤ‘𝑁)‘𝐴)) − 1)))

Proof of Theorem odzcllem Dummy variable 𝑛 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		odzval 12243	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((od_ℤ‘𝑁)‘𝐴) = inf({𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)}, ℝ, < ))
2		1zzd 9282	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → 1 ∈ ℤ)
3		nnuz 9565	. . . . 5 ⊢ ℕ = (ℤ_≥‘1)
4	3	rabeqi 2732	. . . 4 ⊢ {𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)} = {𝑛 ∈ (ℤ_≥‘1) ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)}
5		oveq2 5885	. . . . . . 7 ⊢ (𝑛 = (ϕ‘𝑁) → (𝐴↑𝑛) = (𝐴↑(ϕ‘𝑁)))
6	5	oveq1d 5892	. . . . . 6 ⊢ (𝑛 = (ϕ‘𝑁) → ((𝐴↑𝑛) − 1) = ((𝐴↑(ϕ‘𝑁)) − 1))
7	6	breq2d 4017	. . . . 5 ⊢ (𝑛 = (ϕ‘𝑁) → (𝑁 ∥ ((𝐴↑𝑛) − 1) ↔ 𝑁 ∥ ((𝐴↑(ϕ‘𝑁)) − 1)))
8		phicl 12217	. . . . . 6 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) ∈ ℕ)
9	8	3ad2ant1 1018	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (ϕ‘𝑁) ∈ ℕ)
10		eulerth 12235	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁))
11		simp1 997	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → 𝑁 ∈ ℕ)
12		simp2 998	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → 𝐴 ∈ ℤ)
13	9	nnnn0d 9231	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (ϕ‘𝑁) ∈ ℕ₀)
14		zexpcl 10537	. . . . . . . 8 ⊢ ((𝐴 ∈ ℤ ∧ (ϕ‘𝑁) ∈ ℕ₀) → (𝐴↑(ϕ‘𝑁)) ∈ ℤ)
15	12, 13, 14	syl2anc 411	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (𝐴↑(ϕ‘𝑁)) ∈ ℤ)
16		1z 9281	. . . . . . . 8 ⊢ 1 ∈ ℤ
17		moddvds 11808	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ (𝐴↑(ϕ‘𝑁)) ∈ ℤ ∧ 1 ∈ ℤ) → (((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁) ↔ 𝑁 ∥ ((𝐴↑(ϕ‘𝑁)) − 1)))
18	16, 17	mp3an3 1326	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ (𝐴↑(ϕ‘𝑁)) ∈ ℤ) → (((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁) ↔ 𝑁 ∥ ((𝐴↑(ϕ‘𝑁)) − 1)))
19	11, 15, 18	syl2anc 411	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁) ↔ 𝑁 ∥ ((𝐴↑(ϕ‘𝑁)) − 1)))
20	10, 19	mpbid 147	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → 𝑁 ∥ ((𝐴↑(ϕ‘𝑁)) − 1))
21	7, 9, 20	elrabd 2897	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (ϕ‘𝑁) ∈ {𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)})
22		elfznn 10056	. . . . . . . . 9 ⊢ (𝑛 ∈ (1...(ϕ‘𝑁)) → 𝑛 ∈ ℕ)
23	22	adantl 277	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → 𝑛 ∈ ℕ)
24	23	nnnn0d 9231	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → 𝑛 ∈ ℕ₀)
25		zexpcl 10537	. . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝑛 ∈ ℕ₀) → (𝐴↑𝑛) ∈ ℤ)
26	12, 24, 25	syl2an2r 595	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → (𝐴↑𝑛) ∈ ℤ)
27		peano2zm 9293	. . . . . 6 ⊢ ((𝐴↑𝑛) ∈ ℤ → ((𝐴↑𝑛) − 1) ∈ ℤ)
28	26, 27	syl 14	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → ((𝐴↑𝑛) − 1) ∈ ℤ)
29		dvdsdc 11807	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ ((𝐴↑𝑛) − 1) ∈ ℤ) → DECID 𝑁 ∥ ((𝐴↑𝑛) − 1))
30	11, 28, 29	syl2an2r 595	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → DECID 𝑁 ∥ ((𝐴↑𝑛) − 1))
31	2, 4, 21, 30	infssuzcldc 11954	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → inf({𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)}, ℝ, < ) ∈ {𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)})
32	1, 31	eqeltrd 2254	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((od_ℤ‘𝑁)‘𝐴) ∈ {𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)})
33		oveq2 5885	. . . . 5 ⊢ (𝑛 = ((od_ℤ‘𝑁)‘𝐴) → (𝐴↑𝑛) = (𝐴↑((od_ℤ‘𝑁)‘𝐴)))
34	33	oveq1d 5892	. . . 4 ⊢ (𝑛 = ((od_ℤ‘𝑁)‘𝐴) → ((𝐴↑𝑛) − 1) = ((𝐴↑((od_ℤ‘𝑁)‘𝐴)) − 1))
35	34	breq2d 4017	. . 3 ⊢ (𝑛 = ((od_ℤ‘𝑁)‘𝐴) → (𝑁 ∥ ((𝐴↑𝑛) − 1) ↔ 𝑁 ∥ ((𝐴↑((od_ℤ‘𝑁)‘𝐴)) − 1)))
36	35	elrab 2895	. 2 ⊢ (((od_ℤ‘𝑁)‘𝐴) ∈ {𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)} ↔ (((od_ℤ‘𝑁)‘𝐴) ∈ ℕ ∧ 𝑁 ∥ ((𝐴↑((od_ℤ‘𝑁)‘𝐴)) − 1)))
37	32, 36	sylib 122	1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (((od_ℤ‘𝑁)‘𝐴) ∈ ℕ ∧ 𝑁 ∥ ((𝐴↑((od_ℤ‘𝑁)‘𝐴)) − 1)))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 DECID wdc 834 ∧ w3a 978 = wceq 1353 ∈ wcel 2148 {crab 2459 class class class wbr 4005 ‘cfv 5218 (class class class)co 5877 infcinf 6984 ℝcr 7812 1c1 7814 < clt 7994 − cmin 8130 ℕcn 8921 ℕ₀cn0 9178 ℤcz 9255 ℤ_≥cuz 9530 ...cfz 10010 mod cmo 10324 ↑cexp 10521 ∥ cdvds 11796 gcd cgcd 11945 od_ℤcodz 12210 ϕcphi 12211

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-coll 4120 ax-sep 4123 ax-nul 4131 ax-pow 4176 ax-pr 4211 ax-un 4435 ax-setind 4538 ax-iinf 4589 ax-cnex 7904 ax-resscn 7905 ax-1cn 7906 ax-1re 7907 ax-icn 7908 ax-addcl 7909 ax-addrcl 7910 ax-mulcl 7911 ax-mulrcl 7912 ax-addcom 7913 ax-mulcom 7914 ax-addass 7915 ax-mulass 7916 ax-distr 7917 ax-i2m1 7918 ax-0lt1 7919 ax-1rid 7920 ax-0id 7921 ax-rnegex 7922 ax-precex 7923 ax-cnre 7924 ax-pre-ltirr 7925 ax-pre-ltwlin 7926 ax-pre-lttrn 7927 ax-pre-apti 7928 ax-pre-ltadd 7929 ax-pre-mulgt0 7930 ax-pre-mulext 7931 ax-arch 7932 ax-caucvg 7933

This theorem depends on definitions: df-bi 117 df-stab 831 df-dc 835 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2741 df-sbc 2965 df-csb 3060 df-dif 3133 df-un 3135 df-in 3137 df-ss 3144 df-nul 3425 df-if 3537 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-int 3847 df-iun 3890 df-br 4006 df-opab 4067 df-mpt 4068 df-tr 4104 df-id 4295 df-po 4298 df-iso 4299 df-iord 4368 df-on 4370 df-ilim 4371 df-suc 4373 df-iom 4592 df-xp 4634 df-rel 4635 df-cnv 4636 df-co 4637 df-dm 4638 df-rn 4639 df-res 4640 df-ima 4641 df-iota 5180 df-fun 5220 df-fn 5221 df-f 5222 df-f1 5223 df-fo 5224 df-f1o 5225 df-fv 5226 df-isom 5227 df-riota 5833 df-ov 5880 df-oprab 5881 df-mpo 5882 df-1st 6143 df-2nd 6144 df-recs 6308 df-irdg 6373 df-frec 6394 df-1o 6419 df-oadd 6423 df-er 6537 df-en 6743 df-dom 6744 df-fin 6745 df-sup 6985 df-inf 6986 df-pnf 7996 df-mnf 7997 df-xr 7998 df-ltxr 7999 df-le 8000 df-sub 8132 df-neg 8133 df-reap 8534 df-ap 8541 df-div 8632 df-inn 8922 df-2 8980 df-3 8981 df-4 8982 df-n0 9179 df-z 9256 df-uz 9531 df-q 9622 df-rp 9656 df-fz 10011 df-fzo 10145 df-fl 10272 df-mod 10325 df-seqfrec 10448 df-exp 10522 df-ihash 10758 df-cj 10853 df-re 10854 df-im 10855 df-rsqrt 11009 df-abs 11010 df-clim 11289 df-proddc 11561 df-dvds 11797 df-gcd 11946 df-odz 12212 df-phi 12213

This theorem is referenced by: odzcl 12245 odzid 12246

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