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| Mirrors > Home > ILE Home > Th. List > phibndlem | GIF version | ||
| Description: Lemma for phibnd 13025. (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 9948 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ∈ ℤ) | |
| 4 | gcdid 12789 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℤ → (𝑁 gcd 𝑁) = (abs‘𝑁)) | |
| 5 | 3, 4 | syl 14 | . . . . . . . . . . 11 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 gcd 𝑁) = (abs‘𝑁)) |
| 6 | eluz2nn 9983 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ∈ ℕ) | |
| 7 | nnre 9321 | . . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ) | |
| 8 | nnnn0 9582 | . . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ0) | |
| 9 | 8 | nn0ge0d 9635 | . . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → 0 ≤ 𝑁) |
| 10 | 7, 9 | absidd 11957 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → (abs‘𝑁) = 𝑁) |
| 11 | 6, 10 | syl 14 | . . . . . . . . . . 11 ⊢ (𝑁 ∈ (ℤ≥‘2) → (abs‘𝑁) = 𝑁) |
| 12 | 5, 11 | eqtrd 2271 | . . . . . . . . . 10 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 gcd 𝑁) = 𝑁) |
| 13 | 1re 8332 | . . . . . . . . . . 11 ⊢ 1 ∈ ℝ | |
| 14 | eluz2gt1 10019 | . . . . . . . . . . 11 ⊢ (𝑁 ∈ (ℤ≥‘2) → 1 < 𝑁) | |
| 15 | ltne 8417 | . . . . . . . . . . 11 ⊢ ((1 ∈ ℝ ∧ 1 < 𝑁) → 𝑁 ≠ 1) | |
| 16 | 13, 14, 15 | sylancr 418 | . . . . . . . . . 10 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ≠ 1) |
| 17 | 12, 16 | eqnetrd 2444 | . . . . . . . . 9 ⊢ (𝑁 ∈ (ℤ≥‘2) → (𝑁 gcd 𝑁) ≠ 1) |
| 18 | oveq1 6095 | . . . . . . . . . 10 ⊢ (𝑥 = 𝑁 → (𝑥 gcd 𝑁) = (𝑁 gcd 𝑁)) | |
| 19 | 18 | neeq1d 2438 | . . . . . . . . 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 481 | . . . . . 6 ⊢ (((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) ∧ 𝑥 = 𝑁) → (𝑥 gcd 𝑁) ≠ 1) |
| 23 | 22 | neneqd 2441 | . . . . 5 ⊢ (((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) ∧ 𝑥 = 𝑁) → ¬ (𝑥 gcd 𝑁) = 1) |
| 24 | 23 | pm2.21d 628 | . . . 4 ⊢ (((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) ∧ 𝑥 = 𝑁) → ((𝑥 gcd 𝑁) = 1 → 𝑥 ∈ (1...(𝑁 − 1)))) |
| 25 | fzm1 10525 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘1) → (𝑥 ∈ (1...𝑁) ↔ (𝑥 ∈ (1...(𝑁 − 1)) ∨ 𝑥 = 𝑁))) | |
| 26 | nnuz 9975 | . . . . . . 7 ⊢ ℕ = (ℤ≥‘1) | |
| 27 | 25, 26 | eleq2s 2333 | . . . . . 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 810 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝑥 ∈ (1...𝑁)) → ((𝑥 gcd 𝑁) = 1 → 𝑥 ∈ (1...(𝑁 − 1)))) |
| 31 | 30 | ralrimiva 2623 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘2) → ∀𝑥 ∈ (1...𝑁)((𝑥 gcd 𝑁) = 1 → 𝑥 ∈ (1...(𝑁 − 1)))) |
| 32 | rabss 3325 | . 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 |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ↔ wb 105 ∨ wo 720 = wceq 1402 ∈ wcel 2209 ≠ wne 2420 ∀wral 2528 {crab 2532 ⊆ wss 3220 class class class wbr 4131 ‘cfv 5380 (class class class)co 6088 ℝcr 8185 1c1 8187 < clt 8367 − cmin 8505 ℕcn 9314 2c2 9365 ℤcz 9656 ℤ≥cuz 9938 ...cfz 10429 abscabs 11786 gcd cgcd 12756 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4248 ax-sep 4251 ax-nul 4261 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-iinf 4737 ax-cnex 8277 ax-resscn 8278 ax-1cn 8279 ax-1re 8280 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-mulrcl 8285 ax-addcom 8286 ax-mulcom 8287 ax-addass 8288 ax-mulass 8289 ax-distr 8290 ax-i2m1 8291 ax-0lt1 8292 ax-1rid 8293 ax-0id 8294 ax-rnegex 8295 ax-precex 8296 ax-cnre 8297 ax-pre-ltirr 8298 ax-pre-ltwlin 8299 ax-pre-lttrn 8300 ax-pre-apti 8301 ax-pre-ltadd 8302 ax-pre-mulgt0 8303 ax-pre-mulext 8304 ax-arch 8305 ax-caucvg 8306 |
| This proof depends on definitions: df-bi 117 df-stab 843 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-if 3639 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-tr 4232 df-id 4440 df-po 4443 df-iso 4444 df-iord 4513 df-on 4515 df-ilim 4516 df-suc 4518 df-iom 4740 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-recs 6580 df-frec 6666 df-sup 7331 df-pnf 8369 df-mnf 8370 df-xr 8371 df-ltxr 8372 df-le 8373 df-sub 8507 df-neg 8508 df-reap 8912 df-ap 8919 df-div 9012 df-inn 9315 df-2 9373 df-3 9374 df-4 9375 df-n0 9576 df-z 9657 df-uz 9939 df-q 10037 df-rp 10073 df-fz 10430 df-fzo 10568 df-fl 10723 df-mod 10782 df-seqfrec 10907 df-exp 10998 df-cj 11630 df-re 11631 df-im 11632 df-rsqrt 11787 df-abs 11788 df-dvds 12581 df-gcd 12757 |
| This theorem is used by: phibnd 13025 dfphi2 13028 |
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