| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > expnprm | GIF version | ||
| Description: A second or higher power of a rational number is not a prime number. Or by contraposition, the n-th root of a prime number is not rational. Suggested by Norm Megill. (Contributed by Mario Carneiro, 10-Aug-2015.) |
| Ref | Expression |
|---|---|
| expnprm | ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → ¬ (𝐴↑𝑁) ∈ ℙ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluz2b3 9987 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘2) ↔ (𝑁 ∈ ℕ ∧ 𝑁 ≠ 1)) | |
| 2 | 1 | simprbi 275 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ≠ 1) |
| 3 | 2 | adantl 277 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → 𝑁 ≠ 1) |
| 4 | eluzelz 9914 | . . . . . . . 8 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ∈ ℤ) | |
| 5 | 4 | ad2antlr 493 | . . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → 𝑁 ∈ ℤ) |
| 6 | simpr 110 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → (𝐴↑𝑁) ∈ ℙ) | |
| 7 | simpll 531 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → 𝐴 ∈ ℚ) | |
| 8 | prmnn 12871 | . . . . . . . . . . . 12 ⊢ ((𝐴↑𝑁) ∈ ℙ → (𝐴↑𝑁) ∈ ℕ) | |
| 9 | 8 | adantl 277 | . . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → (𝐴↑𝑁) ∈ ℕ) |
| 10 | 9 | nnne0d 9332 | . . . . . . . . . 10 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → (𝐴↑𝑁) ≠ 0) |
| 11 | eluz2nn 9949 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ∈ ℕ) | |
| 12 | 11 | ad2antlr 493 | . . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → 𝑁 ∈ ℕ) |
| 13 | 12 | 0expd 11110 | . . . . . . . . . 10 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → (0↑𝑁) = 0) |
| 14 | 10, 13 | neeqtrrd 2450 | . . . . . . . . 9 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → (𝐴↑𝑁) ≠ (0↑𝑁)) |
| 15 | oveq1 6086 | . . . . . . . . . 10 ⊢ (𝐴 = 0 → (𝐴↑𝑁) = (0↑𝑁)) | |
| 16 | 15 | necon3i 2468 | . . . . . . . . 9 ⊢ ((𝐴↑𝑁) ≠ (0↑𝑁) → 𝐴 ≠ 0) |
| 17 | 14, 16 | syl 14 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → 𝐴 ≠ 0) |
| 18 | pcqcl 13068 | . . . . . . . 8 ⊢ (((𝐴↑𝑁) ∈ ℙ ∧ (𝐴 ∈ ℚ ∧ 𝐴 ≠ 0)) → ((𝐴↑𝑁) pCnt 𝐴) ∈ ℤ) | |
| 19 | 6, 7, 17, 18 | syl12anc 1276 | . . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → ((𝐴↑𝑁) pCnt 𝐴) ∈ ℤ) |
| 20 | dvdsmul1 12563 | . . . . . . 7 ⊢ ((𝑁 ∈ ℤ ∧ ((𝐴↑𝑁) pCnt 𝐴) ∈ ℤ) → 𝑁 ∥ (𝑁 · ((𝐴↑𝑁) pCnt 𝐴))) | |
| 21 | 5, 19, 20 | syl2anc 415 | . . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → 𝑁 ∥ (𝑁 · ((𝐴↑𝑁) pCnt 𝐴))) |
| 22 | 9 | nncnd 9301 | . . . . . . . . 9 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → (𝐴↑𝑁) ∈ ℂ) |
| 23 | 22 | exp1d 11089 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → ((𝐴↑𝑁)↑1) = (𝐴↑𝑁)) |
| 24 | 23 | oveq2d 6095 | . . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → ((𝐴↑𝑁) pCnt ((𝐴↑𝑁)↑1)) = ((𝐴↑𝑁) pCnt (𝐴↑𝑁))) |
| 25 | 1z 9653 | . . . . . . . 8 ⊢ 1 ∈ ℤ | |
| 26 | pcid 13086 | . . . . . . . 8 ⊢ (((𝐴↑𝑁) ∈ ℙ ∧ 1 ∈ ℤ) → ((𝐴↑𝑁) pCnt ((𝐴↑𝑁)↑1)) = 1) | |
| 27 | 6, 25, 26 | sylancl 417 | . . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → ((𝐴↑𝑁) pCnt ((𝐴↑𝑁)↑1)) = 1) |
| 28 | pcexp 13071 | . . . . . . . 8 ⊢ (((𝐴↑𝑁) ∈ ℙ ∧ (𝐴 ∈ ℚ ∧ 𝐴 ≠ 0) ∧ 𝑁 ∈ ℤ) → ((𝐴↑𝑁) pCnt (𝐴↑𝑁)) = (𝑁 · ((𝐴↑𝑁) pCnt 𝐴))) | |
| 29 | 6, 7, 17, 5, 28 | syl121anc 1283 | . . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → ((𝐴↑𝑁) pCnt (𝐴↑𝑁)) = (𝑁 · ((𝐴↑𝑁) pCnt 𝐴))) |
| 30 | 24, 27, 29 | 3eqtr3rd 2280 | . . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → (𝑁 · ((𝐴↑𝑁) pCnt 𝐴)) = 1) |
| 31 | 21, 30 | breqtrd 4154 | . . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) ∧ (𝐴↑𝑁) ∈ ℙ) → 𝑁 ∥ 1) |
| 32 | 31 | ex 115 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → ((𝐴↑𝑁) ∈ ℙ → 𝑁 ∥ 1)) |
| 33 | 11 | adantl 277 | . . . . . 6 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → 𝑁 ∈ ℕ) |
| 34 | 33 | nnnn0d 9603 | . . . . 5 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → 𝑁 ∈ ℕ0) |
| 35 | dvds1 12603 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → (𝑁 ∥ 1 ↔ 𝑁 = 1)) | |
| 36 | 34, 35 | syl 14 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → (𝑁 ∥ 1 ↔ 𝑁 = 1)) |
| 37 | 32, 36 | sylibd 149 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → ((𝐴↑𝑁) ∈ ℙ → 𝑁 = 1)) |
| 38 | 37 | necon3ad 2462 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → (𝑁 ≠ 1 → ¬ (𝐴↑𝑁) ∈ ℙ)) |
| 39 | 3, 38 | mpd 13 | 1 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ (ℤ≥‘2)) → ¬ (𝐴↑𝑁) ∈ ℙ) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1402 ∈ wcel 2209 ≠ wne 2420 class class class wbr 4128 ‘cfv 5375 (class class class)co 6079 0cc0 8173 1c1 8174 · cmul 8178 ℕcn 9287 2c2 9338 ℕ0cn0 9546 ℤcz 9627 ℤ≥cuz 9904 ℚcq 10002 ↑cexp 10958 ∥ cdvds 12537 ℙcprime 12868 pCnt cpc 13046 |
| 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 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 4244 ax-sep 4247 ax-nul 4257 ax-pow 4309 ax-pr 4344 ax-un 4576 ax-setind 4682 ax-iinf 4733 ax-cnex 8264 ax-resscn 8265 ax-1cn 8266 ax-1re 8267 ax-icn 8268 ax-addcl 8269 ax-addrcl 8270 ax-mulcl 8271 ax-mulrcl 8272 ax-addcom 8273 ax-mulcom 8274 ax-addass 8275 ax-mulass 8276 ax-distr 8277 ax-i2m1 8278 ax-0lt1 8279 ax-1rid 8280 ax-0id 8281 ax-rnegex 8282 ax-precex 8283 ax-cnre 8284 ax-pre-ltirr 8285 ax-pre-ltwlin 8286 ax-pre-lttrn 8287 ax-pre-apti 8288 ax-pre-ltadd 8289 ax-pre-mulgt0 8290 ax-pre-mulext 8291 ax-arch 8292 ax-caucvg 8293 |
| This theorem 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 3714 df-pr 3715 df-op 3717 df-uni 3934 df-int 3969 df-iun 4012 df-br 4129 df-opab 4191 df-mpt 4192 df-tr 4228 df-id 4436 df-po 4439 df-iso 4440 df-iord 4509 df-on 4511 df-ilim 4512 df-suc 4514 df-iom 4736 df-xp 4778 df-rel 4779 df-cnv 4780 df-co 4781 df-dm 4782 df-rn 4783 df-res 4784 df-ima 4785 df-iota 5335 df-fun 5377 df-fn 5378 df-f 5379 df-f1 5380 df-fo 5381 df-f1o 5382 df-fv 5383 df-isom 5384 df-riota 6032 df-ov 6082 df-oprab 6083 df-mpo 6084 df-1st 6368 df-2nd 6369 df-recs 6570 df-frec 6656 df-1o 6681 df-2o 6682 df-er 6801 df-en 7017 df-sup 7318 df-inf 7319 df-pnf 8356 df-mnf 8357 df-xr 8358 df-ltxr 8359 df-le 8360 df-sub 8493 df-neg 8494 df-reap 8897 df-ap 8904 df-div 8997 df-inn 9288 df-2 9346 df-3 9347 df-4 9348 df-n0 9547 df-z 9628 df-uz 9905 df-q 10003 df-rp 10038 df-fz 10395 df-fzo 10533 df-fl 10688 df-mod 10743 df-seqfrec 10868 df-exp 10959 df-cj 11590 df-re 11591 df-im 11592 df-rsqrt 11747 df-abs 11748 df-dvds 12538 df-gcd 12714 df-prm 12869 df-pc 13047 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |