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| Mirrors > Home > ILE Home > Th. List > phibndlem | GIF version | ||
| Description: Lemma for phibnd 12850. (Contributed by Mario Carneiro, 23-Feb-2014.) |
| Ref | Expression |
|---|---|
| phibndlem | ⊢ (𝑁 ∈ (ℤ≥‘2) → {𝑥 ∈ (1...𝑁) ∣ (𝑥 gcd 𝑁) = 1} ⊆ (1...(𝑁 − 1))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpr 110 | . . . . 5 ⊢ (((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) ∧ 𝑥 ∈ (1...(𝑁 − 1))) → 𝑥 ∈ (1...(𝑁 − 1))) | |
| 2 | 1 | a1d 22 | . . . 4 ⊢ (((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) ∧ 𝑥 ∈ (1...(𝑁 − 1))) → ((𝑥 gcd 𝑁) = 1 → 𝑥 ∈ (1...(𝑁 − 1)))) |
| 3 | eluzelz 9808 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ∈ ℤ) | |
| 4 | gcdid 12618 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℤ → (𝑁 gcd 𝑁) = (abs‘𝑁)) | |
| 5 | 3, 4 | syl 14 | . . . . . . . . . . 11 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 gcd 𝑁) = (abs‘𝑁)) |
| 6 | eluz2nn 9843 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ∈ ℕ) | |
| 7 | nnre 9193 | . . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ) | |
| 8 | nnnn0 9452 | . . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ0) | |
| 9 | 8 | nn0ge0d 9501 | . . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → 0 ≤ 𝑁) |
| 10 | 7, 9 | absidd 11788 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → (abs‘𝑁) = 𝑁) |
| 11 | 6, 10 | syl 14 | . . . . . . . . . . 11 ⊢ (𝑁 ∈ (ℤ≥‘2) → (abs‘𝑁) = 𝑁) |
| 12 | 5, 11 | eqtrd 2264 | . . . . . . . . . 10 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 gcd 𝑁) = 𝑁) |
| 13 | 1re 8221 | . . . . . . . . . . 11 ⊢ 1 ∈ ℝ | |
| 14 | eluz2gt1 9879 | . . . . . . . . . . 11 ⊢ (𝑁 ∈ (ℤ≥‘2) → 1 < 𝑁) | |
| 15 | ltne 8307 | . . . . . . . . . . 11 ⊢ ((1 ∈ ℝ ∧ 1 < 𝑁) → 𝑁 ≠ 1) | |
| 16 | 13, 14, 15 | sylancr 414 | . . . . . . . . . 10 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ≠ 1) |
| 17 | 12, 16 | eqnetrd 2427 | . . . . . . . . 9 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 gcd 𝑁) ≠ 1) |
| 18 | oveq1 6035 | . . . . . . . . . 10 ⊢ (𝑥 = 𝑁 → (𝑥 gcd 𝑁) = (𝑁 gcd 𝑁)) | |
| 19 | 18 | neeq1d 2421 | . . . . . . . . 9 ⊢ (𝑥 = 𝑁 → ((𝑥 gcd 𝑁) ≠ 1 ↔ (𝑁 gcd 𝑁) ≠ 1)) |
| 20 | 17, 19 | syl5ibrcom 157 | . . . . . . . 8 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑥 = 𝑁 → (𝑥 gcd 𝑁) ≠ 1)) |
| 21 | 20 | imp 124 | . . . . . . 7 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 = 𝑁) → (𝑥 gcd 𝑁) ≠ 1) |
| 22 | 21 | adantlr 477 | . . . . . 6 ⊢ (((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) ∧ 𝑥 = 𝑁) → (𝑥 gcd 𝑁) ≠ 1) |
| 23 | 22 | neneqd 2424 | . . . . 5 ⊢ (((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) ∧ 𝑥 = 𝑁) → ¬ (𝑥 gcd 𝑁) = 1) |
| 24 | 23 | pm2.21d 624 | . . . 4 ⊢ (((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) ∧ 𝑥 = 𝑁) → ((𝑥 gcd 𝑁) = 1 → 𝑥 ∈ (1...(𝑁 − 1)))) |
| 25 | fzm1 10378 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘1) → (𝑥 ∈ (1...𝑁) ↔ (𝑥 ∈ (1...(𝑁 − 1)) ∨ 𝑥 = 𝑁))) | |
| 26 | nnuz 9835 | . . . . . . 7 ⊢ ℕ = (ℤ≥‘1) | |
| 27 | 25, 26 | eleq2s 2326 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ (1...𝑁) ↔ (𝑥 ∈ (1...(𝑁 − 1)) ∨ 𝑥 = 𝑁))) |
| 28 | 27 | biimpa 296 | . . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (1...𝑁)) → (𝑥 ∈ (1...(𝑁 − 1)) ∨ 𝑥 = 𝑁)) |
| 29 | 6, 28 | sylan 283 | . . . 4 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) → (𝑥 ∈ (1...(𝑁 − 1)) ∨ 𝑥 = 𝑁)) |
| 30 | 2, 24, 29 | mpjaodan 806 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) → ((𝑥 gcd 𝑁) = 1 → 𝑥 ∈ (1...(𝑁 − 1)))) |
| 31 | 30 | ralrimiva 2606 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘2) → ∀𝑥 ∈ (1...𝑁)((𝑥 gcd 𝑁) = 1 → 𝑥 ∈ (1...(𝑁 − 1)))) |
| 32 | rabss 3305 | . 2 ⊢ ({𝑥 ∈ (1...𝑁) ∣ (𝑥 gcd 𝑁) = 1} ⊆ (1...(𝑁 − 1)) ↔ ∀𝑥 ∈ (1...𝑁)((𝑥 gcd 𝑁) = 1 → 𝑥 ∈ (1...(𝑁 − 1)))) | |
| 33 | 31, 32 | sylibr 134 | 1 ⊢ (𝑁 ∈ (ℤ≥‘2) → {𝑥 ∈ (1...𝑁) ∣ (𝑥 gcd 𝑁) = 1} ⊆ (1...(𝑁 − 1))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∨ wo 716 = wceq 1398 ∈ wcel 2202 ≠ wne 2403 ∀wral 2511 {crab 2515 ⊆ wss 3201 class class class wbr 4093 ‘cfv 5333 (class class class)co 6028 ℝcr 8074 1c1 8076 < clt 8257 − cmin 8393 ℕcn 9186 2c2 9237 ℤcz 9522 ℤ≥cuz 9798 ...cfz 10286 abscabs 11618 gcd cgcd 12585 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-iinf 4692 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulrcl 8174 ax-addcom 8175 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-i2m1 8180 ax-0lt1 8181 ax-1rid 8182 ax-0id 8183 ax-rnegex 8184 ax-precex 8185 ax-cnre 8186 ax-pre-ltirr 8187 ax-pre-ltwlin 8188 ax-pre-lttrn 8189 ax-pre-apti 8190 ax-pre-ltadd 8191 ax-pre-mulgt0 8192 ax-pre-mulext 8193 ax-arch 8194 ax-caucvg 8195 |
| This theorem depends on definitions: df-bi 117 df-stab 839 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-if 3608 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-tr 4193 df-id 4396 df-po 4399 df-iso 4400 df-iord 4469 df-on 4471 df-ilim 4472 df-suc 4474 df-iom 4695 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-recs 6514 df-frec 6600 df-sup 7226 df-pnf 8259 df-mnf 8260 df-xr 8261 df-ltxr 8262 df-le 8263 df-sub 8395 df-neg 8396 df-reap 8798 df-ap 8805 df-div 8896 df-inn 9187 df-2 9245 df-3 9246 df-4 9247 df-n0 9446 df-z 9523 df-uz 9799 df-q 9897 df-rp 9932 df-fz 10287 df-fzo 10421 df-fl 10574 df-mod 10629 df-seqfrec 10754 df-exp 10845 df-cj 11463 df-re 11464 df-im 11465 df-rsqrt 11619 df-abs 11620 df-dvds 12410 df-gcd 12586 |
| This theorem is referenced by: phibnd 12850 dfphi2 12853 |
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