| 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 42805. Invoking irrapx1 42798, 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 12244 | . . . . 5 ⊢ ℕ ∈ V | |
| 2 | 1, 1 | xpex 7745 | . . . 4 ⊢ (ℕ × ℕ) ∈ V |
| 3 | opabssxp 5747 | . . . 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 9012 | . . . 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 16227 | . . 3 ⊢ (ℕ × ℕ) ≈ ℕ | |
| 7 | domentr 9025 | . . 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 13018 | . . . . . . 7 ⊢ (𝐷 ∈ ℕ → 𝐷 ∈ ℝ+) | |
| 10 | 9 | rpsqrtcld 15428 | . . . . . 6 ⊢ (𝐷 ∈ ℕ → (√‘𝐷) ∈ ℝ+) |
| 11 | 10 | anim1i 615 | . . . . 5 ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → ((√‘𝐷) ∈ ℝ+ ∧ ¬ (√‘𝐷) ∈ ℚ)) |
| 12 | eldif 3936 | . . . . 5 ⊢ ((√‘𝐷) ∈ (ℝ+ ∖ ℚ) ↔ ((√‘𝐷) ∈ ℝ+ ∧ ¬ (√‘𝐷) ∈ ℚ)) | |
| 13 | 11, 12 | sylibr 234 | . . . 4 ⊢ ((𝐷 ∈ ℕ ∧ ¬ (√‘𝐷) ∈ ℚ) → (√‘𝐷) ∈ (ℝ+ ∖ ℚ)) |
| 14 | irrapx1 42798 | . . . 4 ⊢ ((√‘𝐷) ∈ (ℝ+ ∖ ℚ) → {𝑏 ∈ ℚ ∣ (0 < 𝑏 ∧ (abs‘(𝑏 − (√‘𝐷))) < ((denom‘𝑏)↑-2))} ≈ ℕ) | |
| 15 | ensym 9015 | . . . 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 42801 | . . 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 9024 | . . 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 9105 | . 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 2108 ≠ wne 2932 {crab 3415 Vcvv 3459 ∖ cdif 3923 ⊆ wss 3926 class class class wbr 5119 {copab 5181 × cxp 5652 ‘cfv 6530 (class class class)co 7403 ≈ cen 8954 ≼ cdom 8955 0cc0 11127 1c1 11128 + caddc 11130 · cmul 11132 < clt 11267 − cmin 11464 -cneg 11465 ℕcn 12238 2c2 12293 ℚcq 12962 ℝ+crp 13006 ↑cexp 14077 √csqrt 15250 abscabs 15251 denomcdenom 16751 |
| 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 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7727 ax-inf2 9653 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 ax-pre-sup 11205 |
| 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 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3359 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-int 4923 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-se 5607 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6483 df-fun 6532 df-fn 6533 df-f 6534 df-f1 6535 df-fo 6536 df-f1o 6537 df-fv 6538 df-isom 6539 df-riota 7360 df-ov 7406 df-oprab 7407 df-mpo 7408 df-om 7860 df-1st 7986 df-2nd 7987 df-frecs 8278 df-wrecs 8309 df-recs 8383 df-rdg 8422 df-1o 8478 df-oadd 8482 df-omul 8483 df-er 8717 df-map 8840 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-sup 9452 df-inf 9453 df-oi 9522 df-card 9951 df-acn 9954 df-pnf 11269 df-mnf 11270 df-xr 11271 df-ltxr 11272 df-le 11273 df-sub 11466 df-neg 11467 df-div 11893 df-nn 12239 df-2 12301 df-3 12302 df-n0 12500 df-xnn0 12573 df-z 12587 df-uz 12851 df-q 12963 df-rp 13007 df-ico 13366 df-fz 13523 df-fl 13807 df-mod 13885 df-seq 14018 df-exp 14078 df-hash 14347 df-cj 15116 df-re 15117 df-im 15118 df-sqrt 15252 df-abs 15253 df-dvds 16271 df-gcd 16512 df-numer 16752 df-denom 16753 |
| This theorem is referenced by: pellexlem5 42803 |
| Copyright terms: Public domain | W3C validator |