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Theorem eulerthlem1 12792

Description: Lemma for eulerth 12798. (Contributed by Mario Carneiro, 8-May-2015.)

**Hypotheses**
Ref	Expression
eulerthlem1.1	⊢ (𝜑 → (𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1))
eulerthlem1.2	⊢ 𝑆 = {𝑦 ∈ (0..^𝑁) ∣ (𝑦 gcd 𝑁) = 1}
eulerthlem1.3	⊢ 𝑇 = (1...(ϕ‘𝑁))
eulerthlem1.4	⊢ (𝜑 → 𝐹:𝑇–1-1-onto→𝑆)
eulerthlem1.5	⊢ 𝐺 = (𝑥 ∈ 𝑇 ↦ ((𝐴 · (𝐹‘𝑥)) mod 𝑁))

**Assertion**
Ref	Expression
eulerthlem1	⊢ (𝜑 → 𝐺:𝑇⟶𝑆)

Distinct variable groups: 𝑥,𝑦,𝐴 𝑥,𝐹,𝑦 𝑥,𝐺,𝑦 𝑥,𝑁,𝑦 𝑥,𝑆 𝜑,𝑥,𝑦 𝑥,𝑇,𝑦 Allowed substitution hint: 𝑆(𝑦)

**Proof of Theorem eulerthlem1**
Step	Hyp	Ref	Expression
1		eulerthlem1.1	. . . . . . 7 ⊢ (𝜑 → (𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1))
2	1	simp2d 1034	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℤ)
3	2	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → 𝐴 ∈ ℤ)
4		eulerthlem1.4	. . . . . . . . . 10 ⊢ (𝜑 → 𝐹:𝑇–1-1-onto→𝑆)
5		f1of 5580	. . . . . . . . . 10 ⊢ (𝐹:𝑇–1-1-onto→𝑆 → 𝐹:𝑇⟶𝑆)
6	4, 5	syl 14	. . . . . . . . 9 ⊢ (𝜑 → 𝐹:𝑇⟶𝑆)
7	6	ffvelcdmda 5778	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (𝐹‘𝑥) ∈ 𝑆)
8		oveq1 6020	. . . . . . . . . 10 ⊢ (𝑦 = (𝐹‘𝑥) → (𝑦 gcd 𝑁) = ((𝐹‘𝑥) gcd 𝑁))
9	8	eqeq1d 2238	. . . . . . . . 9 ⊢ (𝑦 = (𝐹‘𝑥) → ((𝑦 gcd 𝑁) = 1 ↔ ((𝐹‘𝑥) gcd 𝑁) = 1))
10		eulerthlem1.2	. . . . . . . . 9 ⊢ 𝑆 = {𝑦 ∈ (0..^𝑁) ∣ (𝑦 gcd 𝑁) = 1}
11	9, 10	elrab2 2963	. . . . . . . 8 ⊢ ((𝐹‘𝑥) ∈ 𝑆 ↔ ((𝐹‘𝑥) ∈ (0..^𝑁) ∧ ((𝐹‘𝑥) gcd 𝑁) = 1))
12	7, 11	sylib 122	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → ((𝐹‘𝑥) ∈ (0..^𝑁) ∧ ((𝐹‘𝑥) gcd 𝑁) = 1))
13	12	simpld 112	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (𝐹‘𝑥) ∈ (0..^𝑁))
14		elfzoelz 10375	. . . . . 6 ⊢ ((𝐹‘𝑥) ∈ (0..^𝑁) → (𝐹‘𝑥) ∈ ℤ)
15	13, 14	syl 14	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (𝐹‘𝑥) ∈ ℤ)
16	3, 15	zmulcld 9601	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (𝐴 · (𝐹‘𝑥)) ∈ ℤ)
17	1	simp1d 1033	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℕ)
18	17	adantr 276	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → 𝑁 ∈ ℕ)
19		zmodfzo 10602	. . . 4 ⊢ (((𝐴 · (𝐹‘𝑥)) ∈ ℤ ∧ 𝑁 ∈ ℕ) → ((𝐴 · (𝐹‘𝑥)) mod 𝑁) ∈ (0..^𝑁))
20	16, 18, 19	syl2anc 411	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → ((𝐴 · (𝐹‘𝑥)) mod 𝑁) ∈ (0..^𝑁))
21		modgcd 12555	. . . . 5 ⊢ (((𝐴 · (𝐹‘𝑥)) ∈ ℤ ∧ 𝑁 ∈ ℕ) → (((𝐴 · (𝐹‘𝑥)) mod 𝑁) gcd 𝑁) = ((𝐴 · (𝐹‘𝑥)) gcd 𝑁))
22	16, 18, 21	syl2anc 411	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (((𝐴 · (𝐹‘𝑥)) mod 𝑁) gcd 𝑁) = ((𝐴 · (𝐹‘𝑥)) gcd 𝑁))
23	17	nnzd 9594	. . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℤ)
24	23	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → 𝑁 ∈ ℤ)
25	16, 24	gcdcomd 12538	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → ((𝐴 · (𝐹‘𝑥)) gcd 𝑁) = (𝑁 gcd (𝐴 · (𝐹‘𝑥))))
26	23, 2	gcdcomd 12538	. . . . . . 7 ⊢ (𝜑 → (𝑁 gcd 𝐴) = (𝐴 gcd 𝑁))
27	1	simp3d 1035	. . . . . . 7 ⊢ (𝜑 → (𝐴 gcd 𝑁) = 1)
28	26, 27	eqtrd 2262	. . . . . 6 ⊢ (𝜑 → (𝑁 gcd 𝐴) = 1)
29	28	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (𝑁 gcd 𝐴) = 1)
30	24, 15	gcdcomd 12538	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (𝑁 gcd (𝐹‘𝑥)) = ((𝐹‘𝑥) gcd 𝑁))
31	12	simprd 114	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → ((𝐹‘𝑥) gcd 𝑁) = 1)
32	30, 31	eqtrd 2262	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (𝑁 gcd (𝐹‘𝑥)) = 1)
33		rpmul 12663	. . . . . 6 ⊢ ((𝑁 ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ (𝐹‘𝑥) ∈ ℤ) → (((𝑁 gcd 𝐴) = 1 ∧ (𝑁 gcd (𝐹‘𝑥)) = 1) → (𝑁 gcd (𝐴 · (𝐹‘𝑥))) = 1))
34	24, 3, 15, 33	syl3anc 1271	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (((𝑁 gcd 𝐴) = 1 ∧ (𝑁 gcd (𝐹‘𝑥)) = 1) → (𝑁 gcd (𝐴 · (𝐹‘𝑥))) = 1))
35	29, 32, 34	mp2and 433	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (𝑁 gcd (𝐴 · (𝐹‘𝑥))) = 1)
36	22, 25, 35	3eqtrd 2266	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → (((𝐴 · (𝐹‘𝑥)) mod 𝑁) gcd 𝑁) = 1)
37		oveq1 6020	. . . . 5 ⊢ (𝑦 = ((𝐴 · (𝐹‘𝑥)) mod 𝑁) → (𝑦 gcd 𝑁) = (((𝐴 · (𝐹‘𝑥)) mod 𝑁) gcd 𝑁))
38	37	eqeq1d 2238	. . . 4 ⊢ (𝑦 = ((𝐴 · (𝐹‘𝑥)) mod 𝑁) → ((𝑦 gcd 𝑁) = 1 ↔ (((𝐴 · (𝐹‘𝑥)) mod 𝑁) gcd 𝑁) = 1))
39	38, 10	elrab2 2963	. . 3 ⊢ (((𝐴 · (𝐹‘𝑥)) mod 𝑁) ∈ 𝑆 ↔ (((𝐴 · (𝐹‘𝑥)) mod 𝑁) ∈ (0..^𝑁) ∧ (((𝐴 · (𝐹‘𝑥)) mod 𝑁) gcd 𝑁) = 1))
40	20, 36, 39	sylanbrc 417	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑇) → ((𝐴 · (𝐹‘𝑥)) mod 𝑁) ∈ 𝑆)
41		eulerthlem1.5	. 2 ⊢ 𝐺 = (𝑥 ∈ 𝑇 ↦ ((𝐴 · (𝐹‘𝑥)) mod 𝑁))
42	40, 41	fmptd 5797	1 ⊢ (𝜑 → 𝐺:𝑇⟶𝑆)

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 1002 = wceq 1395 ∈ wcel 2200 {crab 2512 ↦ cmpt 4148 ⟶wf 5320 –1-1-onto→wf1o 5323 ‘cfv 5324 (class class class)co 6013 0cc0 8025 1c1 8026 · cmul 8030 ℕcn 9136 ℤcz 9472 ...cfz 10236 ..^cfzo 10370 mod cmo 10577 gcd cgcd 12517 ϕcphi 12774

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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4202 ax-sep 4205 ax-nul 4213 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-iinf 4684 ax-cnex 8116 ax-resscn 8117 ax-1cn 8118 ax-1re 8119 ax-icn 8120 ax-addcl 8121 ax-addrcl 8122 ax-mulcl 8123 ax-mulrcl 8124 ax-addcom 8125 ax-mulcom 8126 ax-addass 8127 ax-mulass 8128 ax-distr 8129 ax-i2m1 8130 ax-0lt1 8131 ax-1rid 8132 ax-0id 8133 ax-rnegex 8134 ax-precex 8135 ax-cnre 8136 ax-pre-ltirr 8137 ax-pre-ltwlin 8138 ax-pre-lttrn 8139 ax-pre-apti 8140 ax-pre-ltadd 8141 ax-pre-mulgt0 8142 ax-pre-mulext 8143 ax-arch 8144 ax-caucvg 8145

This theorem depends on definitions: df-bi 117 df-stab 836 df-dc 840 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rmo 2516 df-rab 2517 df-v 2802 df-sbc 3030 df-csb 3126 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-nul 3493 df-if 3604 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-iun 3970 df-br 4087 df-opab 4149 df-mpt 4150 df-tr 4186 df-id 4388 df-po 4391 df-iso 4392 df-iord 4461 df-on 4463 df-ilim 4464 df-suc 4466 df-iom 4687 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-f1 5329 df-fo 5330 df-f1o 5331 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-1st 6298 df-2nd 6299 df-recs 6466 df-frec 6552 df-sup 7177 df-pnf 8209 df-mnf 8210 df-xr 8211 df-ltxr 8212 df-le 8213 df-sub 8345 df-neg 8346 df-reap 8748 df-ap 8755 df-div 8846 df-inn 9137 df-2 9195 df-3 9196 df-4 9197 df-n0 9396 df-z 9473 df-uz 9749 df-q 9847 df-rp 9882 df-fz 10237 df-fzo 10371 df-fl 10523 df-mod 10578 df-seqfrec 10703 df-exp 10794 df-cj 11396 df-re 11397 df-im 11398 df-rsqrt 11552 df-abs 11553 df-dvds 12342 df-gcd 12518

This theorem is referenced by: eulerthlemh 12796 eulerthlemth 12797

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