rmxyelqirr - Mathbox for Stefan O'Rear

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Theorem rmxyelqirr 42921

Description: The solutions used to construct the X and Y sequences are quadratic irrationals. (Contributed by Stefan O'Rear, 21-Sep-2014.) (Proof shortened by SN, 23-Dec-2024.)

**Assertion**
Ref	Expression
rmxyelqirr	⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) ∈ {𝑎 ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ 𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑))})

Distinct variable groups: 𝐴,𝑎,𝑐,𝑑 𝑁,𝑎 Allowed substitution hints: 𝑁(𝑐,𝑑)

**Proof of Theorem rmxyelqirr**
Step	Hyp	Ref	Expression
1		rmspecnonsq 42918	. . . . 5 ⊢ (𝐴 ∈ (ℤ_≥‘2) → ((𝐴↑2) − 1) ∈ (ℕ ∖ ◻_NN))
2	1	adantr 480	. . . 4 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → ((𝐴↑2) − 1) ∈ (ℕ ∖ ◻_NN))
3		pell14qrval 42859	. . . 4 ⊢ (((𝐴↑2) − 1) ∈ (ℕ ∖ ◻_NN) → (Pell14QR‘((𝐴↑2) − 1)) = {𝑎 ∈ ℝ ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ (𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1)})
4	2, 3	syl 17	. . 3 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → (Pell14QR‘((𝐴↑2) − 1)) = {𝑎 ∈ ℝ ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ (𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1)})
5		rabssab 4085	. . . 4 ⊢ {𝑎 ∈ ℝ ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ (𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1)} ⊆ {𝑎 ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ (𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1)}
6		simpl 482	. . . . . . 7 ⊢ ((𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1) → 𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)))
7	6	reximi 3084	. . . . . 6 ⊢ (∃𝑑 ∈ ℤ (𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1) → ∃𝑑 ∈ ℤ 𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)))
8	7	reximi 3084	. . . . 5 ⊢ (∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ (𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1) → ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ 𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)))
9	8	ss2abi 4067	. . . 4 ⊢ {𝑎 ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ (𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1)} ⊆ {𝑎 ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ 𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑))}
10	5, 9	sstri 3993	. . 3 ⊢ {𝑎 ∈ ℝ ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ (𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑)) ∧ ((𝑐↑2) − (((𝐴↑2) − 1) · (𝑑↑2))) = 1)} ⊆ {𝑎 ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ 𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑))}
11	4, 10	eqsstrdi 4028	. 2 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → (Pell14QR‘((𝐴↑2) − 1)) ⊆ {𝑎 ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ 𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑))})
12		simpr 484	. . . 4 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℤ)
13		rmspecfund 42920	. . . . . . 7 ⊢ (𝐴 ∈ (ℤ_≥‘2) → (PellFund‘((𝐴↑2) − 1)) = (𝐴 + (√‘((𝐴↑2) − 1))))
14	13	adantr 480	. . . . . 6 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → (PellFund‘((𝐴↑2) − 1)) = (𝐴 + (√‘((𝐴↑2) − 1))))
15	14	eqcomd 2743	. . . . 5 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → (𝐴 + (√‘((𝐴↑2) − 1))) = (PellFund‘((𝐴↑2) − 1)))
16	15	oveq1d 7446	. . . 4 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) = ((PellFund‘((𝐴↑2) − 1))↑𝑁))
17		oveq2 7439	. . . . 5 ⊢ (𝑎 = 𝑁 → ((PellFund‘((𝐴↑2) − 1))↑𝑎) = ((PellFund‘((𝐴↑2) − 1))↑𝑁))
18	17	rspceeqv 3645	. . . 4 ⊢ ((𝑁 ∈ ℤ ∧ ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) = ((PellFund‘((𝐴↑2) − 1))↑𝑁)) → ∃𝑎 ∈ ℤ ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) = ((PellFund‘((𝐴↑2) − 1))↑𝑎))
19	12, 16, 18	syl2anc 584	. . 3 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → ∃𝑎 ∈ ℤ ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) = ((PellFund‘((𝐴↑2) − 1))↑𝑎))
20		pellfund14b 42910	. . . 4 ⊢ (((𝐴↑2) − 1) ∈ (ℕ ∖ ◻_NN) → (((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) ∈ (Pell14QR‘((𝐴↑2) − 1)) ↔ ∃𝑎 ∈ ℤ ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) = ((PellFund‘((𝐴↑2) − 1))↑𝑎)))
21	2, 20	syl 17	. . 3 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → (((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) ∈ (Pell14QR‘((𝐴↑2) − 1)) ↔ ∃𝑎 ∈ ℤ ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) = ((PellFund‘((𝐴↑2) − 1))↑𝑎)))
22	19, 21	mpbird 257	. 2 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) ∈ (Pell14QR‘((𝐴↑2) − 1)))
23	11, 22	sseldd 3984	1 ⊢ ((𝐴 ∈ (ℤ_≥‘2) ∧ 𝑁 ∈ ℤ) → ((𝐴 + (√‘((𝐴↑2) − 1)))↑𝑁) ∈ {𝑎 ∣ ∃𝑐 ∈ ℕ₀ ∃𝑑 ∈ ℤ 𝑎 = (𝑐 + ((√‘((𝐴↑2) − 1)) · 𝑑))})

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2108 {cab 2714 ∃wrex 3070 {crab 3436 ∖ cdif 3948 ‘cfv 6561 (class class class)co 7431 ℝcr 11154 1c1 11156 + caddc 11158 · cmul 11160 − cmin 11492 ℕcn 12266 2c2 12321 ℕ₀cn0 12526 ℤcz 12613 ℤ_≥cuz 12878 ↑cexp 14102 √csqrt 15272 ◻_NNcsquarenn 42847 Pell14QRcpell14qr 42850 PellFundcpellfund 42851

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 2708 ax-rep 5279 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755 ax-inf2 9681 ax-cnex 11211 ax-resscn 11212 ax-1cn 11213 ax-icn 11214 ax-addcl 11215 ax-addrcl 11216 ax-mulcl 11217 ax-mulrcl 11218 ax-mulcom 11219 ax-addass 11220 ax-mulass 11221 ax-distr 11222 ax-i2m1 11223 ax-1ne0 11224 ax-1rid 11225 ax-rnegex 11226 ax-rrecex 11227 ax-cnre 11228 ax-pre-lttri 11229 ax-pre-lttrn 11230 ax-pre-ltadd 11231 ax-pre-mulgt0 11232 ax-pre-sup 11233 ax-addf 11234

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-pss 3971 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-tp 4631 df-op 4633 df-uni 4908 df-int 4947 df-iun 4993 df-iin 4994 df-br 5144 df-opab 5206 df-mpt 5226 df-tr 5260 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5637 df-se 5638 df-we 5639 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-pred 6321 df-ord 6387 df-on 6388 df-lim 6389 df-suc 6390 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-isom 6570 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-of 7697 df-om 7888 df-1st 8014 df-2nd 8015 df-supp 8186 df-frecs 8306 df-wrecs 8337 df-recs 8411 df-rdg 8450 df-1o 8506 df-2o 8507 df-oadd 8510 df-omul 8511 df-er 8745 df-map 8868 df-pm 8869 df-ixp 8938 df-en 8986 df-dom 8987 df-sdom 8988 df-fin 8989 df-fsupp 9402 df-fi 9451 df-sup 9482 df-inf 9483 df-oi 9550 df-card 9979 df-acn 9982 df-pnf 11297 df-mnf 11298 df-xr 11299 df-ltxr 11300 df-le 11301 df-sub 11494 df-neg 11495 df-div 11921 df-nn 12267 df-2 12329 df-3 12330 df-4 12331 df-5 12332 df-6 12333 df-7 12334 df-8 12335 df-9 12336 df-n0 12527 df-xnn0 12600 df-z 12614 df-dec 12734 df-uz 12879 df-q 12991 df-rp 13035 df-xneg 13154 df-xadd 13155 df-xmul 13156 df-ioo 13391 df-ioc 13392 df-ico 13393 df-icc 13394 df-fz 13548 df-fzo 13695 df-fl 13832 df-mod 13910 df-seq 14043 df-exp 14103 df-fac 14313 df-bc 14342 df-hash 14370 df-shft 15106 df-cj 15138 df-re 15139 df-im 15140 df-sqrt 15274 df-abs 15275 df-limsup 15507 df-clim 15524 df-rlim 15525 df-sum 15723 df-ef 16103 df-sin 16105 df-cos 16106 df-pi 16108 df-dvds 16291 df-gcd 16532 df-numer 16772 df-denom 16773 df-struct 17184 df-sets 17201 df-slot 17219 df-ndx 17231 df-base 17248 df-ress 17275 df-plusg 17310 df-mulr 17311 df-starv 17312 df-sca 17313 df-vsca 17314 df-ip 17315 df-tset 17316 df-ple 17317 df-ds 17319 df-unif 17320 df-hom 17321 df-cco 17322 df-rest 17467 df-topn 17468 df-0g 17486 df-gsum 17487 df-topgen 17488 df-pt 17489 df-prds 17492 df-xrs 17547 df-qtop 17552 df-imas 17553 df-xps 17555 df-mre 17629 df-mrc 17630 df-acs 17632 df-mgm 18653 df-sgrp 18732 df-mnd 18748 df-submnd 18797 df-mulg 19086 df-cntz 19335 df-cmn 19800 df-psmet 21356 df-xmet 21357 df-met 21358 df-bl 21359 df-mopn 21360 df-fbas 21361 df-fg 21362 df-cnfld 21365 df-top 22900 df-topon 22917 df-topsp 22939 df-bases 22953 df-cld 23027 df-ntr 23028 df-cls 23029 df-nei 23106 df-lp 23144 df-perf 23145 df-cn 23235 df-cnp 23236 df-haus 23323 df-tx 23570 df-hmeo 23763 df-fil 23854 df-fm 23946 df-flim 23947 df-flf 23948 df-xms 24330 df-ms 24331 df-tms 24332 df-cncf 24904 df-limc 25901 df-dv 25902 df-log 26598 df-squarenn 42852 df-pell1qr 42853 df-pell14qr 42854 df-pell1234qr 42855 df-pellfund 42856

This theorem is referenced by: rmxyelxp 42924 rmxyval 42927

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