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| 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 15563 | . . 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 15563 | . . 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 2675 | . . 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 2675 | . . . . 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 536 | . . . . . . . 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 538 | . . . . . . . 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 535 | . . . . . . . 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 537 | . . . . . . . 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 540 | . . . . . . . 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 539 | . . . . . . . 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 15566 | . . . . . . 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 2630 | . . . . 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 2630 | . . 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 1372 ∈ wcel 2175 ∃wrex 2484 ↦ cmpt 4104 ran crn 4675 ‘cfv 5270 (class class class)co 5943 + caddc 7927 · cmul 7929 ℕcn 9035 2c2 9086 ℤcz 9371 ↑cexp 10681 abscabs 11279 ℙcprime 12400 ℤ[i]cgz 12663 |
| 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 615 ax-in2 616 ax-io 710 ax-5 1469 ax-7 1470 ax-gen 1471 ax-ie1 1515 ax-ie2 1516 ax-8 1526 ax-10 1527 ax-11 1528 ax-i12 1529 ax-bndl 1531 ax-4 1532 ax-17 1548 ax-i9 1552 ax-ial 1556 ax-i5r 1557 ax-13 2177 ax-14 2178 ax-ext 2186 ax-coll 4158 ax-sep 4161 ax-nul 4169 ax-pow 4217 ax-pr 4252 ax-un 4479 ax-setind 4584 ax-iinf 4635 ax-cnex 8015 ax-resscn 8016 ax-1cn 8017 ax-1re 8018 ax-icn 8019 ax-addcl 8020 ax-addrcl 8021 ax-mulcl 8022 ax-mulrcl 8023 ax-addcom 8024 ax-mulcom 8025 ax-addass 8026 ax-mulass 8027 ax-distr 8028 ax-i2m1 8029 ax-0lt1 8030 ax-1rid 8031 ax-0id 8032 ax-rnegex 8033 ax-precex 8034 ax-cnre 8035 ax-pre-ltirr 8036 ax-pre-ltwlin 8037 ax-pre-lttrn 8038 ax-pre-apti 8039 ax-pre-ltadd 8040 ax-pre-mulgt0 8041 ax-pre-mulext 8042 ax-arch 8043 ax-caucvg 8044 |
| This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1375 df-fal 1378 df-nf 1483 df-sb 1785 df-eu 2056 df-mo 2057 df-clab 2191 df-cleq 2197 df-clel 2200 df-nfc 2336 df-ne 2376 df-nel 2471 df-ral 2488 df-rex 2489 df-reu 2490 df-rmo 2491 df-rab 2492 df-v 2773 df-sbc 2998 df-csb 3093 df-dif 3167 df-un 3169 df-in 3171 df-ss 3178 df-nul 3460 df-if 3571 df-pw 3617 df-sn 3638 df-pr 3639 df-op 3641 df-uni 3850 df-int 3885 df-iun 3928 df-br 4044 df-opab 4105 df-mpt 4106 df-tr 4142 df-id 4339 df-po 4342 df-iso 4343 df-iord 4412 df-on 4414 df-ilim 4415 df-suc 4417 df-iom 4638 df-xp 4680 df-rel 4681 df-cnv 4682 df-co 4683 df-dm 4684 df-rn 4685 df-res 4686 df-ima 4687 df-iota 5231 df-fun 5272 df-fn 5273 df-f 5274 df-f1 5275 df-fo 5276 df-f1o 5277 df-fv 5278 df-riota 5898 df-ov 5946 df-oprab 5947 df-mpo 5948 df-1st 6225 df-2nd 6226 df-recs 6390 df-frec 6476 df-1o 6501 df-2o 6502 df-er 6619 df-en 6827 df-sup 7085 df-pnf 8108 df-mnf 8109 df-xr 8110 df-ltxr 8111 df-le 8112 df-sub 8244 df-neg 8245 df-reap 8647 df-ap 8654 df-div 8745 df-inn 9036 df-2 9094 df-3 9095 df-4 9096 df-n0 9295 df-z 9372 df-uz 9648 df-q 9740 df-rp 9775 df-fz 10130 df-fzo 10264 df-fl 10411 df-mod 10466 df-seqfrec 10591 df-exp 10682 df-cj 11124 df-re 11125 df-im 11126 df-rsqrt 11280 df-abs 11281 df-dvds 12070 df-gcd 12246 df-prm 12401 df-gz 12664 |
| This theorem is referenced by: 2sqlem6 15568 |
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