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| Mirrors > Home > ILE Home > Th. List > prmdc | GIF version | ||
| Description: Primality is decidable. (Contributed by Jim Kingdon, 30-Sep-2024.) |
| Ref | Expression |
|---|---|
| prmdc | ⊢ (𝑁 ∈ ℕ → DECID 𝑁 ∈ ℙ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1nuz2 9956 | . . . . . . 7 ⊢ ¬ 1 ∈ (ℤ≥‘2) | |
| 2 | eleq1 2297 | . . . . . . 7 ⊢ (𝑁 = 1 → (𝑁 ∈ (ℤ≥‘2) ↔ 1 ∈ (ℤ≥‘2))) | |
| 3 | 1, 2 | mtbiri 682 | . . . . . 6 ⊢ (𝑁 = 1 → ¬ 𝑁 ∈ (ℤ≥‘2)) |
| 4 | 3 | orim1i 768 | . . . . 5 ⊢ ((𝑁 = 1 ∨ 𝑁 ∈ (ℤ≥‘2)) → (¬ 𝑁 ∈ (ℤ≥‘2) ∨ 𝑁 ∈ (ℤ≥‘2))) |
| 5 | 4 | orcomd 737 | . . . 4 ⊢ ((𝑁 = 1 ∨ 𝑁 ∈ (ℤ≥‘2)) → (𝑁 ∈ (ℤ≥‘2) ∨ ¬ 𝑁 ∈ (ℤ≥‘2))) |
| 6 | elnn1uz2 9957 | . . . 4 ⊢ (𝑁 ∈ ℕ ↔ (𝑁 = 1 ∨ 𝑁 ∈ (ℤ≥‘2))) | |
| 7 | df-dc 843 | . . . 4 ⊢ (DECID 𝑁 ∈ (ℤ≥‘2) ↔ (𝑁 ∈ (ℤ≥‘2) ∨ ¬ 𝑁 ∈ (ℤ≥‘2))) | |
| 8 | 5, 6, 7 | 3imtr4i 201 | . . 3 ⊢ (𝑁 ∈ ℕ → DECID 𝑁 ∈ (ℤ≥‘2)) |
| 9 | 2z 9622 | . . . . . 6 ⊢ 2 ∈ ℤ | |
| 10 | 9 | a1i 9 | . . . . 5 ⊢ (𝑁 ∈ ℕ → 2 ∈ ℤ) |
| 11 | nnz 9613 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ) | |
| 12 | peano2zm 9632 | . . . . . 6 ⊢ (𝑁 ∈ ℤ → (𝑁 − 1) ∈ ℤ) | |
| 13 | 11, 12 | syl 14 | . . . . 5 ⊢ (𝑁 ∈ ℕ → (𝑁 − 1) ∈ ℤ) |
| 14 | 10, 13 | fzfigd 10817 | . . . 4 ⊢ (𝑁 ∈ ℕ → (2...(𝑁 − 1)) ∈ Fin) |
| 15 | elfzelz 10378 | . . . . . . . . 9 ⊢ (𝑥 ∈ (2...(𝑁 − 1)) → 𝑥 ∈ ℤ) | |
| 16 | 15 | adantl 277 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 𝑥 ∈ ℤ) |
| 17 | 1red 8305 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 1 ∈ ℝ) | |
| 18 | 2re 9324 | . . . . . . . . . 10 ⊢ 2 ∈ ℝ | |
| 19 | 18 | a1i 9 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 2 ∈ ℝ) |
| 20 | 16 | zred 9718 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 𝑥 ∈ ℝ) |
| 21 | 1le2 9463 | . . . . . . . . . 10 ⊢ 1 ≤ 2 | |
| 22 | 21 | a1i 9 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 1 ≤ 2) |
| 23 | elfzle1 10381 | . . . . . . . . . 10 ⊢ (𝑥 ∈ (2...(𝑁 − 1)) → 2 ≤ 𝑥) | |
| 24 | 23 | adantl 277 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 2 ≤ 𝑥) |
| 25 | 17, 19, 20, 22, 24 | letrd 8413 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 1 ≤ 𝑥) |
| 26 | elnnz1 9617 | . . . . . . . 8 ⊢ (𝑥 ∈ ℕ ↔ (𝑥 ∈ ℤ ∧ 1 ≤ 𝑥)) | |
| 27 | 16, 25, 26 | sylanbrc 417 | . . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 𝑥 ∈ ℕ) |
| 28 | 11 | adantr 276 | . . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → 𝑁 ∈ ℤ) |
| 29 | dvdsdc 12509 | . . . . . . 7 ⊢ ((𝑥 ∈ ℕ ∧ 𝑁 ∈ ℤ) → DECID 𝑥 ∥ 𝑁) | |
| 30 | 27, 28, 29 | syl2anc 411 | . . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → DECID 𝑥 ∥ 𝑁) |
| 31 | dcn 850 | . . . . . 6 ⊢ (DECID 𝑥 ∥ 𝑁 → DECID ¬ 𝑥 ∥ 𝑁) | |
| 32 | 30, 31 | syl 14 | . . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ (2...(𝑁 − 1))) → DECID ¬ 𝑥 ∥ 𝑁) |
| 33 | 32 | ralrimiva 2617 | . . . 4 ⊢ (𝑁 ∈ ℕ → ∀𝑥 ∈ (2...(𝑁 − 1))DECID ¬ 𝑥 ∥ 𝑁) |
| 34 | dcfi 7281 | . . . 4 ⊢ (((2...(𝑁 − 1)) ∈ Fin ∧ ∀𝑥 ∈ (2...(𝑁 − 1))DECID ¬ 𝑥 ∥ 𝑁) → DECID ∀𝑥 ∈ (2...(𝑁 − 1)) ¬ 𝑥 ∥ 𝑁) | |
| 35 | 14, 33, 34 | syl2anc 411 | . . 3 ⊢ (𝑁 ∈ ℕ → DECID ∀𝑥 ∈ (2...(𝑁 − 1)) ¬ 𝑥 ∥ 𝑁) |
| 36 | 8, 35 | dcand 941 | . 2 ⊢ (𝑁 ∈ ℕ → DECID (𝑁 ∈ (ℤ≥‘2) ∧ ∀𝑥 ∈ (2...(𝑁 − 1)) ¬ 𝑥 ∥ 𝑁)) |
| 37 | isprm3 12840 | . . 3 ⊢ (𝑁 ∈ ℙ ↔ (𝑁 ∈ (ℤ≥‘2) ∧ ∀𝑥 ∈ (2...(𝑁 − 1)) ¬ 𝑥 ∥ 𝑁)) | |
| 38 | 37 | dcbii 848 | . 2 ⊢ (DECID 𝑁 ∈ ℙ ↔ DECID (𝑁 ∈ (ℤ≥‘2) ∧ ∀𝑥 ∈ (2...(𝑁 − 1)) ¬ 𝑥 ∥ 𝑁)) |
| 39 | 36, 38 | sylibr 134 | 1 ⊢ (𝑁 ∈ ℕ → DECID 𝑁 ∈ ℙ) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ∨ wo 716 DECID wdc 842 = wceq 1398 ∈ wcel 2205 ∀wral 2522 class class class wbr 4114 ‘cfv 5357 (class class class)co 6058 Fincfn 6988 ℝcr 8142 1c1 8144 ≤ cle 8325 − cmin 8460 ℕcn 9254 2c2 9305 ℤcz 9594 ℤ≥cuz 9871 ...cfz 10361 ∥ cdvds 12498 ℙcprime 12829 |
| 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 2207 ax-14 2208 ax-ext 2216 ax-coll 4230 ax-sep 4233 ax-nul 4241 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-iinf 4715 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-mulrcl 8242 ax-addcom 8243 ax-mulcom 8244 ax-addass 8245 ax-mulass 8246 ax-distr 8247 ax-i2m1 8248 ax-0lt1 8249 ax-1rid 8250 ax-0id 8251 ax-rnegex 8252 ax-precex 8253 ax-cnre 8254 ax-pre-ltirr 8255 ax-pre-ltwlin 8256 ax-pre-lttrn 8257 ax-pre-apti 8258 ax-pre-ltadd 8259 ax-pre-mulgt0 8260 ax-pre-mulext 8261 ax-arch 8262 ax-caucvg 8263 |
| 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 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-if 3625 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-iun 3998 df-br 4115 df-opab 4177 df-mpt 4178 df-tr 4214 df-id 4419 df-po 4422 df-iso 4423 df-iord 4492 df-on 4494 df-ilim 4495 df-suc 4497 df-iom 4718 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-f1 5362 df-fo 5363 df-f1o 5364 df-fv 5365 df-riota 6011 df-ov 6061 df-oprab 6062 df-mpo 6063 df-1st 6347 df-2nd 6348 df-recs 6549 df-frec 6635 df-1o 6660 df-2o 6661 df-er 6780 df-en 6989 df-fin 6991 df-pnf 8326 df-mnf 8327 df-xr 8328 df-ltxr 8329 df-le 8330 df-sub 8462 df-neg 8463 df-reap 8866 df-ap 8873 df-div 8964 df-inn 9255 df-2 9313 df-3 9314 df-4 9315 df-n0 9514 df-z 9595 df-uz 9872 df-q 9970 df-rp 10005 df-fz 10362 df-fl 10654 df-mod 10709 df-seqfrec 10834 df-exp 10925 df-cj 11552 df-re 11553 df-im 11554 df-rsqrt 11708 df-abs 11709 df-dvds 12499 df-prm 12830 |
| This theorem is referenced by: pcmptcl 13065 pcmpt 13066 1arith 13090 prminf 13290 lgsval 15989 lgsfvalg 15990 lgsfcl2 15991 lgsval2lem 15995 lgsval4lem 15996 lgsneg 16009 lgsmod 16011 lgsdir 16020 lgsdilem2 16021 lgsdi 16022 lgsne0 16023 |
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