Solving the
generalized Pell equation - PDF File

Solving the
equation ax^2 + bxy + cy^2 + dx + ey + f = 0 - PDF File

Matthews'
method for ax^2 + bxy + cy^2 = N - PDF File

Computing in
Quadratic Orders - PDF File

Linear
Recurrences for Pell Equations - PDF File

A Fast
Algorithm for Computing the Regulator of an Order of a Real Quadratic Field-PDF File

Ambiguous Forms and Ideals in Quadratic Orders

Using Shanks' Baby-Step Giant-Step Method to Solve the Generalized Pell Equation x^2 - Dy^2 = N

Best Approximations to sqrt(D)

Solving
generalized Pell equations

Solving
binary quadratic form equations

Certain
Pell equations

CALC -
system for number theory (includes ``patz'' for Pell equations and
``binform'' for BQF equations)

BC programs
(includes Thue)

Nearest Square Continued Fractions, and Related Topics (talk) (talk with notes)

H. W.
Lenstra Jr on solving Pell equations

Record-holder
solutions of Pell equations

Continued fractions pages at Number Theory Web

Generalized
Pell equation pages at Number Theory Web

Continued
fraction page at World of Mathematics

Pell
equation page at World of Mathematics

MacTutor page on Pell equation

Mathematical Excalibur
- see 6-3 and 7-1 for Pell equation

Question on
subject cf expansions - text file

Proof
that L4=3, L1=7 is not possible - PDF File

Podsypanin's paper on the length of the period of a quadratic irrational

Answers to
Shirali's questions on sums of quadratic residues

Magic squares of squares

No 3x3 binary palindrome magic squares

Some comments on 4x4 magic squares

Searching for 4x4 magic squares

Christian Boyer's magic squares page

Number Theory Web

Keith Matthews home
page

Richard Mollin
home page

Robin Chapman
home page

James Mc Laughlin
home page

Mathematical Association of America

American Mathematical Society

American Mathematics
Competitions

Mathematical Sciences Research
Institute (MSRI)

Clay
Mathematics Institute prize problems

Dave Rusin's
mathematical atlas

Kevin Brown's
essays on number theory

World
of Mathematics Number Theory page

John P. Robertson

jpr2718@gmail.com

I live in South Florida and work as an actuary.

My interests include mathematics, especially curves of genus zero (Pell's
equations and related topics), movies, and small boat sailing.

Last Modified January 17, 2009