| Mathbox for Stefan O'Rear |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > pellfundre | Structured version Visualization version GIF version | ||
| Description: The fundamental solution of a Pell equation exists as a real number. (Contributed by Stefan O'Rear, 18-Sep-2014.) |
| Ref | Expression |
|---|---|
| pellfundre | ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) ∈ ℝ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pellfundval 42853 | . 2 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) = inf({𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}, ℝ, < )) | |
| 2 | ssrab2 4031 | . . . 4 ⊢ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎} ⊆ (Pell14QR‘𝐷) | |
| 3 | pell14qrre 42830 | . . . . . 6 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell14QR‘𝐷)) → 𝑎 ∈ ℝ) | |
| 4 | 3 | ex 412 | . . . . 5 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (𝑎 ∈ (Pell14QR‘𝐷) → 𝑎 ∈ ℝ)) |
| 5 | 4 | ssrdv 3941 | . . . 4 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (Pell14QR‘𝐷) ⊆ ℝ) |
| 6 | 2, 5 | sstrid 3947 | . . 3 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎} ⊆ ℝ) |
| 7 | pell1qrss14 42841 | . . . . 5 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (Pell1QR‘𝐷) ⊆ (Pell14QR‘𝐷)) | |
| 8 | pellqrex 42852 | . . . . 5 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → ∃𝑎 ∈ (Pell1QR‘𝐷)1 < 𝑎) | |
| 9 | ssrexv 4005 | . . . . 5 ⊢ ((Pell1QR‘𝐷) ⊆ (Pell14QR‘𝐷) → (∃𝑎 ∈ (Pell1QR‘𝐷)1 < 𝑎 → ∃𝑎 ∈ (Pell14QR‘𝐷)1 < 𝑎)) | |
| 10 | 7, 8, 9 | sylc 65 | . . . 4 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → ∃𝑎 ∈ (Pell14QR‘𝐷)1 < 𝑎) |
| 11 | rabn0 4340 | . . . 4 ⊢ ({𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎} ≠ ∅ ↔ ∃𝑎 ∈ (Pell14QR‘𝐷)1 < 𝑎) | |
| 12 | 10, 11 | sylibr 234 | . . 3 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎} ≠ ∅) |
| 13 | 1re 11115 | . . . 4 ⊢ 1 ∈ ℝ | |
| 14 | breq2 5096 | . . . . . . 7 ⊢ (𝑎 = 𝑐 → (1 < 𝑎 ↔ 1 < 𝑐)) | |
| 15 | 14 | elrab 3648 | . . . . . 6 ⊢ (𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎} ↔ (𝑐 ∈ (Pell14QR‘𝐷) ∧ 1 < 𝑐)) |
| 16 | pell14qrre 42830 | . . . . . . . 8 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑐 ∈ (Pell14QR‘𝐷)) → 𝑐 ∈ ℝ) | |
| 17 | ltle 11204 | . . . . . . . 8 ⊢ ((1 ∈ ℝ ∧ 𝑐 ∈ ℝ) → (1 < 𝑐 → 1 ≤ 𝑐)) | |
| 18 | 13, 16, 17 | sylancr 587 | . . . . . . 7 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑐 ∈ (Pell14QR‘𝐷)) → (1 < 𝑐 → 1 ≤ 𝑐)) |
| 19 | 18 | expimpd 453 | . . . . . 6 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → ((𝑐 ∈ (Pell14QR‘𝐷) ∧ 1 < 𝑐) → 1 ≤ 𝑐)) |
| 20 | 15, 19 | biimtrid 242 | . . . . 5 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎} → 1 ≤ 𝑐)) |
| 21 | 20 | ralrimiv 3120 | . . . 4 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → ∀𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}1 ≤ 𝑐) |
| 22 | breq1 5095 | . . . . . 6 ⊢ (𝑏 = 1 → (𝑏 ≤ 𝑐 ↔ 1 ≤ 𝑐)) | |
| 23 | 22 | ralbidv 3152 | . . . . 5 ⊢ (𝑏 = 1 → (∀𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}𝑏 ≤ 𝑐 ↔ ∀𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}1 ≤ 𝑐)) |
| 24 | 23 | rspcev 3577 | . . . 4 ⊢ ((1 ∈ ℝ ∧ ∀𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}1 ≤ 𝑐) → ∃𝑏 ∈ ℝ ∀𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}𝑏 ≤ 𝑐) |
| 25 | 13, 21, 24 | sylancr 587 | . . 3 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → ∃𝑏 ∈ ℝ ∀𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}𝑏 ≤ 𝑐) |
| 26 | infrecl 12107 | . . 3 ⊢ (({𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎} ⊆ ℝ ∧ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎} ≠ ∅ ∧ ∃𝑏 ∈ ℝ ∀𝑐 ∈ {𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}𝑏 ≤ 𝑐) → inf({𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}, ℝ, < ) ∈ ℝ) | |
| 27 | 6, 12, 25, 26 | syl3anc 1373 | . 2 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → inf({𝑎 ∈ (Pell14QR‘𝐷) ∣ 1 < 𝑎}, ℝ, < ) ∈ ℝ) |
| 28 | 1, 27 | eqeltrd 2828 | 1 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) ∈ ℝ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 ∀wral 3044 ∃wrex 3053 {crab 3394 ∖ cdif 3900 ⊆ wss 3903 ∅c0 4284 class class class wbr 5092 ‘cfv 6482 infcinf 9331 ℝcr 11008 1c1 11010 < clt 11149 ≤ cle 11150 ℕcn 12128 ◻NNcsquarenn 42809 Pell1QRcpell1qr 42810 Pell14QRcpell14qr 42812 PellFundcpellfund 42813 |
| 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 5218 ax-sep 5235 ax-nul 5245 ax-pow 5304 ax-pr 5371 ax-un 7671 ax-inf2 9537 ax-cnex 11065 ax-resscn 11066 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-addrcl 11070 ax-mulcl 11071 ax-mulrcl 11072 ax-mulcom 11073 ax-addass 11074 ax-mulass 11075 ax-distr 11076 ax-i2m1 11077 ax-1ne0 11078 ax-1rid 11079 ax-rnegex 11080 ax-rrecex 11081 ax-cnre 11082 ax-pre-lttri 11083 ax-pre-lttrn 11084 ax-pre-ltadd 11085 ax-pre-mulgt0 11086 ax-pre-sup 11087 |
| 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 3343 df-reu 3344 df-rab 3395 df-v 3438 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-int 4897 df-iun 4943 df-br 5093 df-opab 5155 df-mpt 5174 df-tr 5200 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-se 5573 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6249 df-ord 6310 df-on 6311 df-lim 6312 df-suc 6313 df-iota 6438 df-fun 6484 df-fn 6485 df-f 6486 df-f1 6487 df-fo 6488 df-f1o 6489 df-fv 6490 df-isom 6491 df-riota 7306 df-ov 7352 df-oprab 7353 df-mpo 7354 df-om 7800 df-1st 7924 df-2nd 7925 df-frecs 8214 df-wrecs 8245 df-recs 8294 df-rdg 8332 df-1o 8388 df-oadd 8392 df-omul 8393 df-er 8625 df-map 8755 df-en 8873 df-dom 8874 df-sdom 8875 df-fin 8876 df-sup 9332 df-inf 9333 df-oi 9402 df-card 9835 df-acn 9838 df-pnf 11151 df-mnf 11152 df-xr 11153 df-ltxr 11154 df-le 11155 df-sub 11349 df-neg 11350 df-div 11778 df-nn 12129 df-2 12191 df-3 12192 df-n0 12385 df-xnn0 12458 df-z 12472 df-uz 12736 df-q 12850 df-rp 12894 df-ico 13254 df-fz 13411 df-fl 13696 df-mod 13774 df-seq 13909 df-exp 13969 df-hash 14238 df-cj 15006 df-re 15007 df-im 15008 df-sqrt 15142 df-abs 15143 df-dvds 16164 df-gcd 16406 df-numer 16646 df-denom 16647 df-squarenn 42814 df-pell1qr 42815 df-pell14qr 42816 df-pell1234qr 42817 df-pellfund 42818 |
| This theorem is referenced by: pellfundgt1 42856 pellfundglb 42858 pellfundex 42859 pellfund14gap 42860 pellfundrp 42861 rmspecfund 42882 |
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