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SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for Stefan O'Rear
Pell equations 2: Algebraic number theory of the solution set
pell14qrre
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pell14qrne0
Metamath Proof Explorer
Ascii
Unicode
Theorem
pell14qrre
Description:
A positive Pell solution is a real number.
(Contributed by
Stefan O'Rear
, 18-Sep-2014)
Ref
Expression
Assertion
pell14qrre
⊢
D
∈
ℕ
∖
◻
ℕ
∧
A
∈
Pell14QR
⁡
D
→
A
∈
ℝ
Proof
Step
Hyp
Ref
Expression
1
pell14qrss1234
⊢
D
∈
ℕ
∖
◻
ℕ
→
Pell14QR
⁡
D
⊆
Pell1234QR
⁡
D
2
1
sselda
⊢
D
∈
ℕ
∖
◻
ℕ
∧
A
∈
Pell14QR
⁡
D
→
A
∈
Pell1234QR
⁡
D
3
pell1234qrre
⊢
D
∈
ℕ
∖
◻
ℕ
∧
A
∈
Pell1234QR
⁡
D
→
A
∈
ℝ
4
2
3
syldan
⊢
D
∈
ℕ
∖
◻
ℕ
∧
A
∈
Pell14QR
⁡
D
→
A
∈
ℝ