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Theorem odzcllem 12170

Description: - Lemma for odzcl 12171, 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 12169	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((od_ℤ‘𝑁)‘𝐴) = inf({𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)}, ℝ, < ))
2		1zzd 9214	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → 1 ∈ ℤ)
3		nnuz 9497	. . . . 5 ⊢ ℕ = (ℤ_≥‘1)
4	3	rabeqi 2718	. . . 4 ⊢ {𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)} = {𝑛 ∈ (ℤ_≥‘1) ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)}
5		oveq2 5849	. . . . . . 7 ⊢ (𝑛 = (ϕ‘𝑁) → (𝐴↑𝑛) = (𝐴↑(ϕ‘𝑁)))
6	5	oveq1d 5856	. . . . . 6 ⊢ (𝑛 = (ϕ‘𝑁) → ((𝐴↑𝑛) − 1) = ((𝐴↑(ϕ‘𝑁)) − 1))
7	6	breq2d 3993	. . . . 5 ⊢ (𝑛 = (ϕ‘𝑁) → (𝑁 ∥ ((𝐴↑𝑛) − 1) ↔ 𝑁 ∥ ((𝐴↑(ϕ‘𝑁)) − 1)))
8		phicl 12143	. . . . . 6 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) ∈ ℕ)
9	8	3ad2ant1 1008	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (ϕ‘𝑁) ∈ ℕ)
10		eulerth 12161	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁))
11		simp1 987	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → 𝑁 ∈ ℕ)
12		simp2 988	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → 𝐴 ∈ ℤ)
13	9	nnnn0d 9163	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (ϕ‘𝑁) ∈ ℕ₀)
14		zexpcl 10466	. . . . . . . 8 ⊢ ((𝐴 ∈ ℤ ∧ (ϕ‘𝑁) ∈ ℕ₀) → (𝐴↑(ϕ‘𝑁)) ∈ ℤ)
15	12, 13, 14	syl2anc 409	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (𝐴↑(ϕ‘𝑁)) ∈ ℤ)
16		1z 9213	. . . . . . . 8 ⊢ 1 ∈ ℤ
17		moddvds 11735	. . . . . . . 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 1316	. . . . . . 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 409	. . . . . 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 146	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → 𝑁 ∥ ((𝐴↑(ϕ‘𝑁)) − 1))
21	7, 9, 20	elrabd 2883	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (ϕ‘𝑁) ∈ {𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)})
22		elfznn 9985	. . . . . . . . 9 ⊢ (𝑛 ∈ (1...(ϕ‘𝑁)) → 𝑛 ∈ ℕ)
23	22	adantl 275	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → 𝑛 ∈ ℕ)
24	23	nnnn0d 9163	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → 𝑛 ∈ ℕ₀)
25		zexpcl 10466	. . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝑛 ∈ ℕ₀) → (𝐴↑𝑛) ∈ ℤ)
26	12, 24, 25	syl2an2r 585	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → (𝐴↑𝑛) ∈ ℤ)
27		peano2zm 9225	. . . . . 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 11734	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ ((𝐴↑𝑛) − 1) ∈ ℤ) → DECID 𝑁 ∥ ((𝐴↑𝑛) − 1))
30	11, 28, 29	syl2an2r 585	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑛 ∈ (1...(ϕ‘𝑁))) → DECID 𝑁 ∥ ((𝐴↑𝑛) − 1))
31	2, 4, 21, 30	infssuzcldc 11880	. . 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 2242	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((od_ℤ‘𝑁)‘𝐴) ∈ {𝑛 ∈ ℕ ∣ 𝑁 ∥ ((𝐴↑𝑛) − 1)})
33		oveq2 5849	. . . . 5 ⊢ (𝑛 = ((od_ℤ‘𝑁)‘𝐴) → (𝐴↑𝑛) = (𝐴↑((od_ℤ‘𝑁)‘𝐴)))
34	33	oveq1d 5856	. . . 4 ⊢ (𝑛 = ((od_ℤ‘𝑁)‘𝐴) → ((𝐴↑𝑛) − 1) = ((𝐴↑((od_ℤ‘𝑁)‘𝐴)) − 1))
35	34	breq2d 3993	. . 3 ⊢ (𝑛 = ((od_ℤ‘𝑁)‘𝐴) → (𝑁 ∥ ((𝐴↑𝑛) − 1) ↔ 𝑁 ∥ ((𝐴↑((od_ℤ‘𝑁)‘𝐴)) − 1)))
36	35	elrab 2881	. 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 121	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 103 ↔ wb 104 DECID wdc 824 ∧ w3a 968 = wceq 1343 ∈ wcel 2136 {crab 2447 class class class wbr 3981 ‘cfv 5187 (class class class)co 5841 infcinf 6944 ℝcr 7748 1c1 7750 < clt 7929 − cmin 8065 ℕcn 8853 ℕ₀cn0 9110 ℤcz 9187 ℤ_≥cuz 9462 ...cfz 9940 mod cmo 10253 ↑cexp 10450 ∥ cdvds 11723 gcd cgcd 11871 od_ℤcodz 12136 ϕcphi 12137

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-coll 4096 ax-sep 4099 ax-nul 4107 ax-pow 4152 ax-pr 4186 ax-un 4410 ax-setind 4513 ax-iinf 4564 ax-cnex 7840 ax-resscn 7841 ax-1cn 7842 ax-1re 7843 ax-icn 7844 ax-addcl 7845 ax-addrcl 7846 ax-mulcl 7847 ax-mulrcl 7848 ax-addcom 7849 ax-mulcom 7850 ax-addass 7851 ax-mulass 7852 ax-distr 7853 ax-i2m1 7854 ax-0lt1 7855 ax-1rid 7856 ax-0id 7857 ax-rnegex 7858 ax-precex 7859 ax-cnre 7860 ax-pre-ltirr 7861 ax-pre-ltwlin 7862 ax-pre-lttrn 7863 ax-pre-apti 7864 ax-pre-ltadd 7865 ax-pre-mulgt0 7866 ax-pre-mulext 7867 ax-arch 7868 ax-caucvg 7869

This theorem depends on definitions: df-bi 116 df-stab 821 df-dc 825 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2296 df-ne 2336 df-nel 2431 df-ral 2448 df-rex 2449 df-reu 2450 df-rmo 2451 df-rab 2452 df-v 2727 df-sbc 2951 df-csb 3045 df-dif 3117 df-un 3119 df-in 3121 df-ss 3128 df-nul 3409 df-if 3520 df-pw 3560 df-sn 3581 df-pr 3582 df-op 3584 df-uni 3789 df-int 3824 df-iun 3867 df-br 3982 df-opab 4043 df-mpt 4044 df-tr 4080 df-id 4270 df-po 4273 df-iso 4274 df-iord 4343 df-on 4345 df-ilim 4346 df-suc 4348 df-iom 4567 df-xp 4609 df-rel 4610 df-cnv 4611 df-co 4612 df-dm 4613 df-rn 4614 df-res 4615 df-ima 4616 df-iota 5152 df-fun 5189 df-fn 5190 df-f 5191 df-f1 5192 df-fo 5193 df-f1o 5194 df-fv 5195 df-isom 5196 df-riota 5797 df-ov 5844 df-oprab 5845 df-mpo 5846 df-1st 6105 df-2nd 6106 df-recs 6269 df-irdg 6334 df-frec 6355 df-1o 6380 df-oadd 6384 df-er 6497 df-en 6703 df-dom 6704 df-fin 6705 df-sup 6945 df-inf 6946 df-pnf 7931 df-mnf 7932 df-xr 7933 df-ltxr 7934 df-le 7935 df-sub 8067 df-neg 8068 df-reap 8469 df-ap 8476 df-div 8565 df-inn 8854 df-2 8912 df-3 8913 df-4 8914 df-n0 9111 df-z 9188 df-uz 9463 df-q 9554 df-rp 9586 df-fz 9941 df-fzo 10074 df-fl 10201 df-mod 10254 df-seqfrec 10377 df-exp 10451 df-ihash 10685 df-cj 10780 df-re 10781 df-im 10782 df-rsqrt 10936 df-abs 10937 df-clim 11216 df-proddc 11488 df-dvds 11724 df-gcd 11872 df-odz 12138 df-phi 12139

This theorem is referenced by: odzcl 12171 odzid 12172

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