| Mathbox for Stefan O'Rear |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > rmspecnonsq | Structured version Visualization version GIF version | ||
| Description: The discriminant used to define the X and Y sequences is a nonsquare positive integer and thus a valid Pell equation discriminant. (Contributed by Stefan O'Rear, 21-Sep-2014.) |
| Ref | Expression |
|---|---|
| rmspecnonsq | ⊢ (𝐴 ∈ (ℤ≥‘2) → ((𝐴↑2) − 1) ∈ (ℕ ∖ ◻NN)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluzelz 12985 | . . . . 5 ⊢ (𝐴 ∈ (ℤ≥‘2) → 𝐴 ∈ ℤ) | |
| 2 | zsqcl 14282 | . . . . 5 ⊢ (𝐴 ∈ ℤ → (𝐴↑2) ∈ ℤ) | |
| 3 | 1, 2 | syl 18 | . . . 4 ⊢ (𝐴 ∈ (ℤ≥‘2) → (𝐴↑2) ∈ ℤ) |
| 4 | 1zzd 12737 | . . . 4 ⊢ (𝐴 ∈ (ℤ≥‘2) → 1 ∈ ℤ) | |
| 5 | 3, 4 | zsubcld 12818 | . . 3 ⊢ (𝐴 ∈ (ℤ≥‘2) → ((𝐴↑2) − 1) ∈ ℤ) |
| 6 | sq1 14348 | . . . . 5 ⊢ (1↑2) = 1 | |
| 7 | eluz2b2 13058 | . . . . . . 7 ⊢ (𝐴 ∈ (ℤ≥‘2) ↔ (𝐴 ∈ ℕ ∧ 1 < 𝐴)) | |
| 8 | 7 | simprbi 503 | . . . . . 6 ⊢ (𝐴 ∈ (ℤ≥‘2) → 1 < 𝐴) |
| 9 | 1red 11319 | . . . . . . 7 ⊢ (𝐴 ∈ (ℤ≥‘2) → 1 ∈ ℝ) | |
| 10 | eluzelre 12986 | . . . . . . 7 ⊢ (𝐴 ∈ (ℤ≥‘2) → 𝐴 ∈ ℝ) | |
| 11 | 0le1 11849 | . . . . . . . 8 ⊢ 0 ≤ 1 | |
| 12 | 11 | a1i 11 | . . . . . . 7 ⊢ (𝐴 ∈ (ℤ≥‘2) → 0 ≤ 1) |
| 13 | eluzge2nn0 13029 | . . . . . . . 8 ⊢ (𝐴 ∈ (ℤ≥‘2) → 𝐴 ∈ ℕ0) | |
| 14 | 13 | nn0ge0d 12680 | . . . . . . 7 ⊢ (𝐴 ∈ (ℤ≥‘2) → 0 ≤ 𝐴) |
| 15 | 9, 10, 12, 14 | lt2sqd 14410 | . . . . . 6 ⊢ (𝐴 ∈ (ℤ≥‘2) → (1 < 𝐴 ↔ (1↑2) < (𝐴↑2))) |
| 16 | 8, 15 | mpbid 235 | . . . . 5 ⊢ (𝐴 ∈ (ℤ≥‘2) → (1↑2) < (𝐴↑2)) |
| 17 | 6, 16 | eqbrtrrid 5143 | . . . 4 ⊢ (𝐴 ∈ (ℤ≥‘2) → 1 < (𝐴↑2)) |
| 18 | 10 | resqcld 14278 | . . . . 5 ⊢ (𝐴 ∈ (ℤ≥‘2) → (𝐴↑2) ∈ ℝ) |
| 19 | 9, 18 | posdifd 11913 | . . . 4 ⊢ (𝐴 ∈ (ℤ≥‘2) → (1 < (𝐴↑2) ↔ 0 < ((𝐴↑2) − 1))) |
| 20 | 17, 19 | mpbid 235 | . . 3 ⊢ (𝐴 ∈ (ℤ≥‘2) → 0 < ((𝐴↑2) − 1)) |
| 21 | elnnz 12713 | . . 3 ⊢ (((𝐴↑2) − 1) ∈ ℕ ↔ (((𝐴↑2) − 1) ∈ ℤ ∧ 0 < ((𝐴↑2) − 1))) | |
| 22 | 5, 20, 21 | sylanbrc 595 | . 2 ⊢ (𝐴 ∈ (ℤ≥‘2) → ((𝐴↑2) − 1) ∈ ℕ) |
| 23 | rmspecsqrtnq 44053 | . . . . 5 ⊢ (𝐴 ∈ (ℤ≥‘2) → (√‘((𝐴↑2) − 1)) ∈ (ℂ ∖ ℚ)) | |
| 24 | 23 | eldifbd 4054 | . . . 4 ⊢ (𝐴 ∈ (ℤ≥‘2) → ¬ (√‘((𝐴↑2) − 1)) ∈ ℚ) |
| 25 | 24 | intnand 494 | . . 3 ⊢ (𝐴 ∈ (ℤ≥‘2) → ¬ (((𝐴↑2) − 1) ∈ ℕ ∧ (√‘((𝐴↑2) − 1)) ∈ ℚ)) |
| 26 | df-squarenn 43988 | . . . . 5 ⊢ ◻NN = {𝑎 ∈ ℕ ∣ (√‘𝑎) ∈ ℚ} | |
| 27 | 26 | eleq2i 2855 | . . . 4 ⊢ (((𝐴↑2) − 1) ∈ ◻NN ↔ ((𝐴↑2) − 1) ∈ {𝑎 ∈ ℕ ∣ (√‘𝑎) ∈ ℚ}) |
| 28 | fveq2 6893 | . . . . . 6 ⊢ (𝑎 = ((𝐴↑2) − 1) → (√‘𝑎) = (√‘((𝐴↑2) − 1))) | |
| 29 | 28 | eleq1d 2848 | . . . . 5 ⊢ (𝑎 = ((𝐴↑2) − 1) → ((√‘𝑎) ∈ ℚ ↔ (√‘((𝐴↑2) − 1)) ∈ ℚ)) |
| 30 | 29 | elrab 3647 | . . . 4 ⊢ (((𝐴↑2) − 1) ∈ {𝑎 ∈ ℕ ∣ (√‘𝑎) ∈ ℚ} ↔ (((𝐴↑2) − 1) ∈ ℕ ∧ (√‘((𝐴↑2) − 1)) ∈ ℚ)) |
| 31 | 27, 30 | bitr2i 279 | . . 3 ⊢ ((((𝐴↑2) − 1) ∈ ℕ ∧ (√‘((𝐴↑2) − 1)) ∈ ℚ) ↔ ((𝐴↑2) − 1) ∈ ◻NN) |
| 32 | 25, 31 | sylnib 331 | . 2 ⊢ (𝐴 ∈ (ℤ≥‘2) → ¬ ((𝐴↑2) − 1) ∈ ◻NN) |
| 33 | 22, 32 | eldifd 4052 | 1 ⊢ (𝐴 ∈ (ℤ≥‘2) → ((𝐴↑2) − 1) ∈ (ℕ ∖ ◻NN)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2146 {crab 3415 ∖ cdif 4047 class class class wbr 5105 ‘cfv 6546 (class class class)co 7427 ℂcc 11208 0cc0 11210 1c1 11211 < clt 11353 ≤ cle 11354 − cmin 11551 ℕcn 12345 2c2 12407 ℤcz 12703 ℤ≥cuz 12975 ℚcq 13085 ↑cexp 14214 √csqrt 15412 ◻NNcsquarenn 43983 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pow 5330 ax-pr 5394 ax-un 7758 ax-cnex 11266 ax-resscn 11267 ax-1cn 11268 ax-icn 11269 ax-addcl 11270 ax-addrcl 11271 ax-mulcl 11272 ax-mulrcl 11273 ax-mulcom 11274 ax-addass 11275 ax-mulass 11276 ax-distr 11277 ax-i2m1 11278 ax-1ne0 11279 ax-1rid 11280 ax-rnegex 11281 ax-rrecex 11282 ax-cnre 11283 ax-pre-lttri 11284 ax-pre-lttrn 11285 ax-pre-ltadd 11286 ax-pre-mulgt0 11287 ax-pre-sup 11288 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3455 df-sbc 3742 df-csb 3851 df-ss 3900 df-pss 4016 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-iun 4955 df-br 5106 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5549 df-eprel 5554 df-po 5562 df-so 5563 df-fr 5607 df-we 5609 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 6310 df-ord 6371 df-on 6372 df-lim 6373 df-suc 6374 df-iota 6500 df-fun 6548 df-fn 6549 df-f 6550 df-f1 6551 df-fo 6552 df-f1o 6553 df-fv 6554 df-riota 7384 df-ov 7430 df-oprab 7431 df-mpo 7432 df-om 7885 df-1st 8008 df-2nd 8009 df-frecs 8310 df-wrecs 8341 df-recs 8390 df-rdg 8429 df-er 8728 df-en 8985 df-dom 8986 df-sdom 8987 df-sup 9444 df-inf 9445 df-pnf 11355 df-mnf 11356 df-xr 11357 df-ltxr 11358 df-le 11359 df-sub 11553 df-neg 11554 df-div 11984 df-nn 12346 df-2 12415 df-3 12416 df-n0 12617 df-z 12704 df-uz 12976 df-q 13086 df-rp 13131 df-fl 13942 df-mod 14020 df-seq 14155 df-exp 14215 df-cj 15278 df-re 15279 df-im 15280 df-sqrt 15414 df-abs 15415 df-dvds 16435 df-gcd 16677 df-numer 16923 df-denom 16924 df-squarenn 43988 |
| This theorem is used by: rmspecfund 44056 rmxyelqirr 44057 rmxycomplete 44064 rmbaserp 44066 rmxyneg 44067 rmxm1 44081 rmxluc 44083 rmxdbl 44086 ltrmxnn0 44096 jm2.19lem1 44136 jm2.23 44143 rmxdiophlem 44162 |
| Copyright terms: Public domain | W3C validator |