Theorem pellfundex 41614

Description: The fundamental solution as an infimum is itself a solution, showing that the solution set is discrete.

Since the fundamental solution is an infimum, there must be an element ge to Fund and lt 2*Fund. If this element is equal to the fundamental solution we're done, otherwise use the infimum again to find another element which must be ge Fund and lt the first element; their ratio is a group element in (1,2), contradicting pell14qrgapw 41604. (Contributed by Stefan O'Rear, 18-Sep-2014.)

Assertion

Ref	Expression
pellfundex	⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))

Proof of Theorem pellfundex

Dummy variables 𝑎 𝑏 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		2re 12285	. . . 4 ⊢ 2 ∈ ℝ
2		pellfundre 41609	. . . 4 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) ∈ ℝ)
3		remulcl 11194	. . . 4 ⊢ ((2 ∈ ℝ ∧ (PellFund‘𝐷) ∈ ℝ) → (2 · (PellFund‘𝐷)) ∈ ℝ)
4	1, 2, 3	sylancr 587	. . 3 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (2 · (PellFund‘𝐷)) ∈ ℝ)
5		0red 11216	. . . . . . 7 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → 0 ∈ ℝ)
6		1red 11214	. . . . . . 7 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → 1 ∈ ℝ)
7		0lt1 11735	. . . . . . . 8 ⊢ 0 < 1
8	7	a1i 11	. . . . . . 7 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → 0 < 1)
9		pellfundgt1 41611	. . . . . . 7 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → 1 < (PellFund‘𝐷))
10	5, 6, 2, 8, 9	lttrd 11374	. . . . . 6 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → 0 < (PellFund‘𝐷))
11	2, 10	elrpd 13012	. . . . 5 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) ∈ ℝ+)
12	2, 11	ltaddrpd 13048	. . . 4 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) < ((PellFund‘𝐷) + (PellFund‘𝐷)))
13	2	recnd 11241	. . . . 5 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) ∈ ℂ)
14	13	2timesd 12454	. . . 4 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (2 · (PellFund‘𝐷)) = ((PellFund‘𝐷) + (PellFund‘𝐷)))
15	12, 14	breqtrrd 5176	. . 3 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) < (2 · (PellFund‘𝐷)))
16		pellfundglb 41613	. . 3 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (2 · (PellFund‘𝐷)) ∈ ℝ ∧ (PellFund‘𝐷) < (2 · (PellFund‘𝐷))) → ∃𝑎 ∈ (Pell1QR‘𝐷)((PellFund‘𝐷) ≤ 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷))))
17	4, 15, 16	mpd3an23 1463	. 2 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → ∃𝑎 ∈ (Pell1QR‘𝐷)((PellFund‘𝐷) ≤ 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷))))
18	2	adantr 481	. . . . . 6 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → (PellFund‘𝐷) ∈ ℝ)
19		pell1qrss14 41596	. . . . . . . 8 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (Pell1QR‘𝐷) ⊆ (Pell14QR‘𝐷))
20	19	sselda 3982	. . . . . . 7 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → 𝑎 ∈ (Pell14QR‘𝐷))
21		pell14qrre 41585	. . . . . . 7 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell14QR‘𝐷)) → 𝑎 ∈ ℝ)
22	20, 21	syldan 591	. . . . . 6 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → 𝑎 ∈ ℝ)
23	18, 22	leloed 11356	. . . . 5 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → ((PellFund‘𝐷) ≤ 𝑎 ↔ ((PellFund‘𝐷) < 𝑎 ∨ (PellFund‘𝐷) = 𝑎)))
24		simp-4l 781	. . . . . . . . 9 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝐷 ∈ (ℕ ∖ ◻NN))
25		simp-4r 782	. . . . . . . . 9 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝑎 ∈ (Pell1QR‘𝐷))
26		simplr 767	. . . . . . . . 9 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝑏 ∈ (Pell1QR‘𝐷))
27		simprr 771	. . . . . . . . 9 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝑏 < 𝑎)
28	22	ad3antrrr 728	. . . . . . . . . 10 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝑎 ∈ ℝ)
29	4	ad4antr 730	. . . . . . . . . 10 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → (2 · (PellFund‘𝐷)) ∈ ℝ)
30	19	ad4antr 730	. . . . . . . . . . . . 13 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → (Pell1QR‘𝐷) ⊆ (Pell14QR‘𝐷))
31	30, 26	sseldd 3983	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝑏 ∈ (Pell14QR‘𝐷))
32		pell14qrre 41585	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑏 ∈ (Pell14QR‘𝐷)) → 𝑏 ∈ ℝ)
33	24, 31, 32	syl2anc 584	. . . . . . . . . . 11 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝑏 ∈ ℝ)
34		remulcl 11194	. . . . . . . . . . 11 ⊢ ((2 ∈ ℝ ∧ 𝑏 ∈ ℝ) → (2 · 𝑏) ∈ ℝ)
35	1, 33, 34	sylancr 587	. . . . . . . . . 10 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → (2 · 𝑏) ∈ ℝ)
36		simprr 771	. . . . . . . . . . 11 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) → 𝑎 < (2 · (PellFund‘𝐷)))
37	36	ad2antrr 724	. . . . . . . . . 10 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝑎 < (2 · (PellFund‘𝐷)))
38		simprl 769	. . . . . . . . . . 11 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → (PellFund‘𝐷) ≤ 𝑏)
39	2	ad4antr 730	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → (PellFund‘𝐷) ∈ ℝ)
40	1	a1i 11	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 2 ∈ ℝ)
41		2pos 12314	. . . . . . . . . . . . 13 ⊢ 0 < 2
42	41	a1i 11	. . . . . . . . . . . 12 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 0 < 2)
43		lemul2 12066	. . . . . . . . . . . 12 ⊢ (((PellFund‘𝐷) ∈ ℝ ∧ 𝑏 ∈ ℝ ∧ (2 ∈ ℝ ∧ 0 < 2)) → ((PellFund‘𝐷) ≤ 𝑏 ↔ (2 · (PellFund‘𝐷)) ≤ (2 · 𝑏)))
44	39, 33, 40, 42, 43	syl112anc 1374	. . . . . . . . . . 11 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → ((PellFund‘𝐷) ≤ 𝑏 ↔ (2 · (PellFund‘𝐷)) ≤ (2 · 𝑏)))
45	38, 44	mpbid 231	. . . . . . . . . 10 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → (2 · (PellFund‘𝐷)) ≤ (2 · 𝑏))
46	28, 29, 35, 37, 45	ltletrd 11373	. . . . . . . . 9 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → 𝑎 < (2 · 𝑏))
47		simp1 1136	. . . . . . . . . 10 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝐷 ∈ (ℕ ∖ ◻NN))
48	19	3ad2ant1 1133	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → (Pell1QR‘𝐷) ⊆ (Pell14QR‘𝐷))
49		simp2l 1199	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑎 ∈ (Pell1QR‘𝐷))
50	48, 49	sseldd 3983	. . . . . . . . . . 11 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑎 ∈ (Pell14QR‘𝐷))
51		simp2r 1200	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑏 ∈ (Pell1QR‘𝐷))
52	48, 51	sseldd 3983	. . . . . . . . . . 11 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑏 ∈ (Pell14QR‘𝐷))
53		pell14qrdivcl 41593	. . . . . . . . . . 11 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell14QR‘𝐷) ∧ 𝑏 ∈ (Pell14QR‘𝐷)) → (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷))
54	47, 50, 52, 53	syl3anc 1371	. . . . . . . . . 10 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷))
55	47, 52, 32	syl2anc 584	. . . . . . . . . . . . . 14 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑏 ∈ ℝ)
56	55	recnd 11241	. . . . . . . . . . . . 13 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑏 ∈ ℂ)
57	56	mullidd 11231	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → (1 · 𝑏) = 𝑏)
58		simp3l 1201	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑏 < 𝑎)
59	57, 58	eqbrtrd 5170	. . . . . . . . . . 11 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → (1 · 𝑏) < 𝑎)
60		1red 11214	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 1 ∈ ℝ)
61	47, 50, 21	syl2anc 584	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑎 ∈ ℝ)
62		pell14qrgt0 41587	. . . . . . . . . . . . 13 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑏 ∈ (Pell14QR‘𝐷)) → 0 < 𝑏)
63	47, 52, 62	syl2anc 584	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 0 < 𝑏)
64		ltmuldiv 12086	. . . . . . . . . . . 12 ⊢ ((1 ∈ ℝ ∧ 𝑎 ∈ ℝ ∧ (𝑏 ∈ ℝ ∧ 0 < 𝑏)) → ((1 · 𝑏) < 𝑎 ↔ 1 < (𝑎 / 𝑏)))
65	60, 61, 55, 63, 64	syl112anc 1374	. . . . . . . . . . 11 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → ((1 · 𝑏) < 𝑎 ↔ 1 < (𝑎 / 𝑏)))
66	59, 65	mpbid 231	. . . . . . . . . 10 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 1 < (𝑎 / 𝑏))
67		simp3r 1202	. . . . . . . . . . 11 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 𝑎 < (2 · 𝑏))
68	1	a1i 11	. . . . . . . . . . . 12 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → 2 ∈ ℝ)
69		ltdivmul2 12090	. . . . . . . . . . . 12 ⊢ ((𝑎 ∈ ℝ ∧ 2 ∈ ℝ ∧ (𝑏 ∈ ℝ ∧ 0 < 𝑏)) → ((𝑎 / 𝑏) < 2 ↔ 𝑎 < (2 · 𝑏)))
70	61, 68, 55, 63, 69	syl112anc 1374	. . . . . . . . . . 11 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → ((𝑎 / 𝑏) < 2 ↔ 𝑎 < (2 · 𝑏)))
71	67, 70	mpbird 256	. . . . . . . . . 10 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → (𝑎 / 𝑏) < 2)
72		simprr 771	. . . . . . . . . . 11 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → (𝑎 / 𝑏) < 2)
73		simpll 765	. . . . . . . . . . . . 13 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → 𝐷 ∈ (ℕ ∖ ◻NN))
74		simplr 767	. . . . . . . . . . . . 13 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷))
75		simprl 769	. . . . . . . . . . . . 13 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → 1 < (𝑎 / 𝑏))
76		pell14qrgapw 41604	. . . . . . . . . . . . 13 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷) ∧ 1 < (𝑎 / 𝑏)) → 2 < (𝑎 / 𝑏))
77	73, 74, 75, 76	syl3anc 1371	. . . . . . . . . . . 12 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → 2 < (𝑎 / 𝑏))
78		pell14qrre 41585	. . . . . . . . . . . . . 14 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) → (𝑎 / 𝑏) ∈ ℝ)
79	78	adantr 481	. . . . . . . . . . . . 13 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → (𝑎 / 𝑏) ∈ ℝ)
80		ltnsym 11311	. . . . . . . . . . . . 13 ⊢ ((2 ∈ ℝ ∧ (𝑎 / 𝑏) ∈ ℝ) → (2 < (𝑎 / 𝑏) → ¬ (𝑎 / 𝑏) < 2))
81	1, 79, 80	sylancr 587	. . . . . . . . . . . 12 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → (2 < (𝑎 / 𝑏) → ¬ (𝑎 / 𝑏) < 2))
82	77, 81	mpd 15	. . . . . . . . . . 11 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → ¬ (𝑎 / 𝑏) < 2)
83	72, 82	pm2.21dd 194	. . . . . . . . . 10 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 / 𝑏) ∈ (Pell14QR‘𝐷)) ∧ (1 < (𝑎 / 𝑏) ∧ (𝑎 / 𝑏) < 2)) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))
84	47, 54, 66, 71, 83	syl22anc 837	. . . . . . . . 9 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ (𝑎 ∈ (Pell1QR‘𝐷) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ (𝑏 < 𝑎 ∧ 𝑎 < (2 · 𝑏))) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))
85	24, 25, 26, 27, 46, 84	syl122anc 1379	. . . . . . . 8 ⊢ (((((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) ∧ 𝑏 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎)) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))
86		simpll 765	. . . . . . . . 9 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) → 𝐷 ∈ (ℕ ∖ ◻NN))
87	22	adantr 481	. . . . . . . . 9 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) → 𝑎 ∈ ℝ)
88		simprl 769	. . . . . . . . 9 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) → (PellFund‘𝐷) < 𝑎)
89		pellfundglb 41613	. . . . . . . . 9 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ ℝ ∧ (PellFund‘𝐷) < 𝑎) → ∃𝑏 ∈ (Pell1QR‘𝐷)((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎))
90	86, 87, 88, 89	syl3anc 1371	. . . . . . . 8 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) → ∃𝑏 ∈ (Pell1QR‘𝐷)((PellFund‘𝐷) ≤ 𝑏 ∧ 𝑏 < 𝑎))
91	85, 90	r19.29a 3162	. . . . . . 7 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ ((PellFund‘𝐷) < 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷)))) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))
92	91	exp32 421	. . . . . 6 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → ((PellFund‘𝐷) < 𝑎 → (𝑎 < (2 · (PellFund‘𝐷)) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))))
93		simp2 1137	. . . . . . . 8 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ (PellFund‘𝐷) = 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷))) → (PellFund‘𝐷) = 𝑎)
94		simp1r 1198	. . . . . . . 8 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ (PellFund‘𝐷) = 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷))) → 𝑎 ∈ (Pell1QR‘𝐷))
95	93, 94	eqeltrd 2833	. . . . . . 7 ⊢ (((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) ∧ (PellFund‘𝐷) = 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷))) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))
96	95	3exp 1119	. . . . . 6 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → ((PellFund‘𝐷) = 𝑎 → (𝑎 < (2 · (PellFund‘𝐷)) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))))
97	92, 96	jaod 857	. . . . 5 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → (((PellFund‘𝐷) < 𝑎 ∨ (PellFund‘𝐷) = 𝑎) → (𝑎 < (2 · (PellFund‘𝐷)) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))))
98	23, 97	sylbid 239	. . . 4 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → ((PellFund‘𝐷) ≤ 𝑎 → (𝑎 < (2 · (PellFund‘𝐷)) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))))
99	98	impd 411	. . 3 ⊢ ((𝐷 ∈ (ℕ ∖ ◻NN) ∧ 𝑎 ∈ (Pell1QR‘𝐷)) → (((PellFund‘𝐷) ≤ 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷))) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷)))
100	99	rexlimdva 3155	. 2 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (∃𝑎 ∈ (Pell1QR‘𝐷)((PellFund‘𝐷) ≤ 𝑎 ∧ 𝑎 < (2 · (PellFund‘𝐷))) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷)))
101	17, 100	mpd 15	1 ⊢ (𝐷 ∈ (ℕ ∖ ◻NN) → (PellFund‘𝐷) ∈ (Pell1QR‘𝐷))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 205   ∧ wa 396   ∨ wo 845   ∧ w3a 1087   = wceq 1541   ∈ wcel 2106  ∃wrex 3070   ∖ cdif 3945   ⊆ wss 3948   class class class wbr 5148  ‘cfv 6543  (class class class)co 7408  ℝcr 11108  0cc0 11109  1c1 11110   + caddc 11112   · cmul 11114   < clt 11247   ≤ cle 11248   / cdiv 11870  ℕcn 12211  2c2 12266  ◻_NNcsquarenn 41564  Pell1QRcpell1qr 41565  Pell14QRcpell14qr 41567  PellFundcpellfund 41568

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2703  ax-rep 5285  ax-sep 5299  ax-nul 5306  ax-pow 5363  ax-pr 5427  ax-un 7724  ax-inf2 9635  ax-cnex 11165  ax-resscn 11166  ax-1cn 11167  ax-icn 11168  ax-addcl 11169  ax-addrcl 11170  ax-mulcl 11171  ax-mulrcl 11172  ax-mulcom 11173  ax-addass 11174  ax-mulass 11175  ax-distr 11176  ax-i2m1 11177  ax-1ne0 11178  ax-1rid 11179  ax-rnegex 11180  ax-rrecex 11181  ax-cnre 11182  ax-pre-lttri 11183  ax-pre-lttrn 11184  ax-pre-ltadd 11185  ax-pre-mulgt0 11186  ax-pre-sup 11187

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3or 1088  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-nf 1786  df-sb 2068  df-mo 2534  df-eu 2563  df-clab 2710  df-cleq 2724  df-clel 2810  df-nfc 2885  df-ne 2941  df-nel 3047  df-ral 3062  df-rex 3071  df-rmo 3376  df-reu 3377  df-rab 3433  df-v 3476  df-sbc 3778  df-csb 3894  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-pss 3967  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-op 4635  df-uni 4909  df-int 4951  df-iun 4999  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5574  df-eprel 5580  df-po 5588  df-so 5589  df-fr 5631  df-se 5632  df-we 5633  df-xp 5682  df-rel 5683  df-cnv 5684  df-co 5685  df-dm 5686  df-rn 5687  df-res 5688  df-ima 5689  df-pred 6300  df-ord 6367  df-on 6368  df-lim 6369  df-suc 6370  df-iota 6495  df-fun 6545  df-fn 6546  df-f 6547  df-f1 6548  df-fo 6549  df-f1o 6550  df-fv 6551  df-isom 6552  df-riota 7364  df-ov 7411  df-oprab 7412  df-mpo 7413  df-om 7855  df-1st 7974  df-2nd 7975  df-frecs 8265  df-wrecs 8296  df-recs 8370  df-rdg 8409  df-1o 8465  df-oadd 8469  df-omul 8470  df-er 8702  df-map 8821  df-en 8939  df-dom 8940  df-sdom 8941  df-fin 8942  df-sup 9436  df-inf 9437  df-oi 9504  df-card 9933  df-acn 9936  df-pnf 11249  df-mnf 11250  df-xr 11251  df-ltxr 11252  df-le 11253  df-sub 11445  df-neg 11446  df-div 11871  df-nn 12212  df-2 12274  df-3 12275  df-n0 12472  df-xnn0 12544  df-z 12558  df-uz 12822  df-q 12932  df-rp 12974  df-ico 13329  df-fz 13484  df-fl 13756  df-mod 13834  df-seq 13966  df-exp 14027  df-hash 14290  df-cj 15045  df-re 15046  df-im 15047  df-sqrt 15181  df-abs 15182  df-dvds 16197  df-gcd 16435  df-numer 16670  df-denom 16671  df-squarenn 41569  df-pell1qr 41570  df-pell14qr 41571  df-pell1234qr 41572  df-pellfund 41573

This theorem is referenced by:  pellfund14  41626  pellfund14b  41627