| Mathbox for Stefan O'Rear |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > pellexlem4 | Structured version Visualization version GIF version | ||
| Description: Lemma for pellex 42816. Invoking irrapx1 42809, we have infinitely many near-solutions. (Contributed by Stefan O'Rear, 14-Sep-2014.) |
| Ref | Expression |
|---|---|
| pellexlem4 | ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≈ ℕ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnex 12168 | . . . . 5 ⊢ ℕ ∈ V | |
| 2 | 1, 1 | xpex 7709 | . . . 4 ⊢ (ℕ × ℕ) ∈ V |
| 3 | opabssxp 5723 | . . . 4 ⊢ {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ⊆ (ℕ × ℕ) | |
| 4 | ssdomg 8948 | . . . 4 ⊢ ((ℕ × ℕ) ∈ V → ({〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ⊆ (ℕ × ℕ) → {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≼ (ℕ × ℕ))) | |
| 5 | 2, 3, 4 | mp2 9 | . . 3 ⊢ {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≼ (ℕ × ℕ) |
| 6 | xpnnen 16155 | . . 3 ⊢ (ℕ × ℕ) ≈ ℕ | |
| 7 | domentr 8961 | . . 3 ⊢ (({〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≼ (ℕ × ℕ) ∧ (ℕ × ℕ) ≈ ℕ) → {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≼ ℕ) | |
| 8 | 5, 6, 7 | mp2an 692 | . 2 ⊢ {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≼ ℕ |
| 9 | nnrp 12939 | . . . . . . 7 ⊢ (𝐷 ∈ ℕ → 𝐷 ∈ ℝ+) | |
| 10 | 9 | rpsqrtcld 15354 | . . . . . 6 ⊢ (𝐷 ∈ ℕ → (√‘𝐷) ∈ ℝ+) |
| 11 | 10 | anim1i 615 | . . . . 5 ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → ((√‘𝐷) ∈ ℝ+ ∧ ¬ (√‘𝐷) ∈ ℚ)) |
| 12 | eldif 3921 | . . . . 5 ⊢ ((√‘𝐷) ∈ (ℝ+ ∖ ℚ) ↔ ((√‘𝐷) ∈ ℝ+ ∧ ¬ (√‘𝐷) ∈ ℚ)) | |
| 13 | 11, 12 | sylibr 234 | . . . 4 ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → (√‘𝐷) ∈ (ℝ+ ∖ ℚ)) |
| 14 | irrapx1 42809 | . . . 4 ⊢ ((√‘𝐷) ∈ (ℝ+ ∖ ℚ) → {𝑏 ∈ ℚ ∣ (0 < 𝑏 ∧ (abs‘(𝑏 − (√‘𝐷))) < ((denom‘𝑏)↑-2))} ≈ ℕ) | |
| 15 | ensym 8951 | . . . 4 ⊢ ({𝑏 ∈ ℚ ∣ (0 < 𝑏 ∧ (abs‘(𝑏 − (√‘𝐷))) < ((denom‘𝑏)↑-2))} ≈ ℕ → ℕ ≈ {𝑏 ∈ ℚ ∣ (0 < 𝑏 ∧ (abs‘(𝑏 − (√‘𝐷))) < ((denom‘𝑏)↑-2))}) | |
| 16 | 13, 14, 15 | 3syl 18 | . . 3 ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → ℕ ≈ {𝑏 ∈ ℚ ∣ (0 < 𝑏 ∧ (abs‘(𝑏 − (√‘𝐷))) < ((denom‘𝑏)↑-2))}) |
| 17 | pellexlem3 42812 | . . 3 ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → {𝑏 ∈ ℚ ∣ (0 < 𝑏 ∧ (abs‘(𝑏 − (√‘𝐷))) < ((denom‘𝑏)↑-2))} ≼ {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))}) | |
| 18 | endomtr 8960 | . . 3 ⊢ ((ℕ ≈ {𝑏 ∈ ℚ ∣ (0 < 𝑏 ∧ (abs‘(𝑏 − (√‘𝐷))) < ((denom‘𝑏)↑-2))} ∧ {𝑏 ∈ ℚ ∣ (0 < 𝑏 ∧ (abs‘(𝑏 − (√‘𝐷))) < ((denom‘𝑏)↑-2))} ≼ {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))}) → ℕ ≼ {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))}) | |
| 19 | 16, 17, 18 | syl2anc 584 | . 2 ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → ℕ ≼ {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))}) |
| 20 | sbth 9038 | . 2 ⊢ (({〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≼ ℕ ∧ ℕ ≼ {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))}) → {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≈ ℕ) | |
| 21 | 8, 19, 20 | sylancr 587 | 1 ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → {〈𝑦, 𝑧〉 ∣ ((𝑦 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (((𝑦↑2) − (𝐷 · (𝑧↑2))) ≠ 0 ∧ (abs‘((𝑦↑2) − (𝐷 · (𝑧↑2)))) < (1 + (2 · (√‘𝐷)))))} ≈ ℕ) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∈ wcel 2109 ≠ wne 2925 {crab 3402 Vcvv 3444 ∖ cdif 3908 ⊆ wss 3911 class class class wbr 5102 {copab 5164 × cxp 5629 ‘cfv 6499 (class class class)co 7369 ≈ cen 8892 ≼ cdom 8893 0cc0 11044 1c1 11045 + caddc 11047 · cmul 11049 < clt 11184 − cmin 11381 -cneg 11382 ℕcn 12162 2c2 12217 ℚcq 12883 ℝ+crp 12927 ↑cexp 14002 √csqrt 15175 abscabs 15176 denomcdenom 16680 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5229 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-inf2 9570 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 ax-pre-sup 11122 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3351 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-int 4907 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-isom 6508 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7823 df-1st 7947 df-2nd 7948 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-1o 8411 df-oadd 8415 df-omul 8416 df-er 8648 df-map 8778 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-sup 9369 df-inf 9370 df-oi 9439 df-card 9868 df-acn 9871 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-div 11812 df-nn 12163 df-2 12225 df-3 12226 df-n0 12419 df-xnn0 12492 df-z 12506 df-uz 12770 df-q 12884 df-rp 12928 df-ico 13288 df-fz 13445 df-fl 13730 df-mod 13808 df-seq 13943 df-exp 14003 df-hash 14272 df-cj 15041 df-re 15042 df-im 15043 df-sqrt 15177 df-abs 15178 df-dvds 16199 df-gcd 16441 df-numer 16681 df-denom 16682 |
| This theorem is referenced by: pellexlem5 42814 |
| Copyright terms: Public domain | W3C validator |