| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > 2sqlem5 | GIF version | ||
| Description: Lemma for 2sq . If a number that is a sum of two squares is divisible by a prime that is a sum of two squares, then the quotient is a sum of two squares. (Contributed by Mario Carneiro, 20-Jun-2015.) |
| Ref | Expression |
|---|---|
| 2sq.1 | ⊢ 𝑆 = ran (𝑤 ∈ ℤ[i] ↦ ((abs‘𝑤)↑2)) |
| 2sqlem5.1 | ⊢ (𝜑 → 𝑁 ∈ ℕ) |
| 2sqlem5.2 | ⊢ (𝜑 → 𝑃 ∈ ℙ) |
| 2sqlem5.3 | ⊢ (𝜑 → (𝑁 · 𝑃) ∈ 𝑆) |
| 2sqlem5.4 | ⊢ (𝜑 → 𝑃 ∈ 𝑆) |
| Ref | Expression |
|---|---|
| 2sqlem5 | ⊢ (𝜑 → 𝑁 ∈ 𝑆) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2sqlem5.4 | . . 3 ⊢ (𝜑 → 𝑃 ∈ 𝑆) | |
| 2 | 2sq.1 | . . . 4 ⊢ 𝑆 = ran (𝑤 ∈ ℤ[i] ↦ ((abs‘𝑤)↑2)) | |
| 3 | 2 | 2sqlem2 16114 | . . 3 ⊢ (𝑃 ∈ 𝑆 ↔ ∃𝑝 ∈ ℤ ∃𝑞 ∈ ℤ 𝑃 = ((𝑝↑2) + (𝑞↑2))) |
| 4 | 1, 3 | sylib 122 | . 2 ⊢ (𝜑 → ∃𝑝 ∈ ℤ ∃𝑞 ∈ ℤ 𝑃 = ((𝑝↑2) + (𝑞↑2))) |
| 5 | 2sqlem5.3 | . . 3 ⊢ (𝜑 → (𝑁 · 𝑃) ∈ 𝑆) | |
| 6 | 2 | 2sqlem2 16114 | . . 3 ⊢ ((𝑁 · 𝑃) ∈ 𝑆 ↔ ∃𝑥 ∈ ℤ ∃𝑦 ∈ ℤ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) |
| 7 | 5, 6 | sylib 122 | . 2 ⊢ (𝜑 → ∃𝑥 ∈ ℤ ∃𝑦 ∈ ℤ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) |
| 8 | reeanv 2715 | . . 3 ⊢ (∃𝑝 ∈ ℤ ∃𝑥 ∈ ℤ (∃𝑞 ∈ ℤ 𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ ∃𝑦 ∈ ℤ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) ↔ (∃𝑝 ∈ ℤ ∃𝑞 ∈ ℤ 𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ ∃𝑥 ∈ ℤ ∃𝑦 ∈ ℤ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2)))) | |
| 9 | reeanv 2715 | . . . . 5 ⊢ (∃𝑞 ∈ ℤ ∃𝑦 ∈ ℤ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) ↔ (∃𝑞 ∈ ℤ 𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ ∃𝑦 ∈ ℤ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2)))) | |
| 10 | 2sqlem5.1 | . . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
| 11 | 10 | ad2antrr 488 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → 𝑁 ∈ ℕ) |
| 12 | 2sqlem5.2 | . . . . . . . . 9 ⊢ (𝜑 → 𝑃 ∈ ℙ) | |
| 13 | 12 | ad2antrr 488 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → 𝑃 ∈ ℙ) |
| 14 | simplrr 538 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → 𝑥 ∈ ℤ) | |
| 15 | simprlr 540 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → 𝑦 ∈ ℤ) | |
| 16 | simplrl 537 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → 𝑝 ∈ ℤ) | |
| 17 | simprll 539 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → 𝑞 ∈ ℤ) | |
| 18 | simprrr 542 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) | |
| 19 | simprrl 541 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → 𝑃 = ((𝑝↑2) + (𝑞↑2))) | |
| 20 | 2, 11, 13, 14, 15, 16, 17, 18, 19 | 2sqlem4 16117 | . . . . . . 7 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ ((𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))))) → 𝑁 ∈ 𝑆) |
| 21 | 20 | expr 375 | . . . . . 6 ⊢ (((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) ∧ (𝑞 ∈ ℤ ∧ 𝑦 ∈ ℤ)) → ((𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) → 𝑁 ∈ 𝑆)) |
| 22 | 21 | rexlimdvva 2670 | . . . . 5 ⊢ ((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) → (∃𝑞 ∈ ℤ ∃𝑦 ∈ ℤ (𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) → 𝑁 ∈ 𝑆)) |
| 23 | 9, 22 | biimtrrid 153 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ ℤ ∧ 𝑥 ∈ ℤ)) → ((∃𝑞 ∈ ℤ 𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ ∃𝑦 ∈ ℤ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) → 𝑁 ∈ 𝑆)) |
| 24 | 23 | rexlimdvva 2670 | . . 3 ⊢ (𝜑 → (∃𝑝 ∈ ℤ ∃𝑥 ∈ ℤ (∃𝑞 ∈ ℤ 𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ ∃𝑦 ∈ ℤ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) → 𝑁 ∈ 𝑆)) |
| 25 | 8, 24 | biimtrrid 153 | . 2 ⊢ (𝜑 → ((∃𝑝 ∈ ℤ ∃𝑞 ∈ ℤ 𝑃 = ((𝑝↑2) + (𝑞↑2)) ∧ ∃𝑥 ∈ ℤ ∃𝑦 ∈ ℤ (𝑁 · 𝑃) = ((𝑥↑2) + (𝑦↑2))) → 𝑁 ∈ 𝑆)) |
| 26 | 4, 7, 25 | mp2and 433 | 1 ⊢ (𝜑 → 𝑁 ∈ 𝑆) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 ∈ wcel 2205 ∃wrex 2523 ↦ cmpt 4176 ran crn 4755 ‘cfv 5357 (class class class)co 6058 + caddc 8146 · cmul 8148 ℕcn 9254 2c2 9305 ℤcz 9594 ↑cexp 10924 abscabs 11707 ℙcprime 12829 ℤ[i]cgz 13092 |
| 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-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-sup 7288 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-fzo 10499 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-gcd 12675 df-prm 12830 df-gz 13093 |
| This theorem is referenced by: 2sqlem6 16119 |
| Copyright terms: Public domain | W3C validator |