English

Solution of Certain Pell Equations

Number Theory 2014-02-24 v1 Combinatorics

Abstract

Let a,b,ca,b,c be any positive integers such that cabc\mid ab and di±d_i^\pm is a square free positive integer of the form di±=a2kb2l±icmd_i^\pm=a^{2k} b^{2l}\pm i c^m where k,lmk,l \geq m and i=1,2.i=1,2. The main focus of this paper to find the fundamental solution of the equation x2di±y2=1 x^2-d_i^\pm y^2=1 with the help of the continued fraction of di±.\sqrt{d_i^\pm}. We also obtain all the positive solutions of the equations x2di±y2=±1 x^2-d_i^\pm y^2=\pm 1 and x2di±y2=±4 x^2-d_i^\pm y^2=\pm 4 by means of the Fibonacci and Lucas sequences. Furthermore, in this work, we derive some algebraic relations on the Pell form Fdi±(x,y)=x2di±y2 F_{d_i^\pm}(x, y) = x^2-d_i^\pm y^2 including cycle, proper cycle, reduction and proper automorphism of it. We also determine the integer solutions of the Pell equation FΔdi±(x,y)=1 F_{\Delta_{d_i^\pm}} (x, y) = 1 in terms of $d_i^\pm. We generalized all the results of the papers [2], [9], [26], and [37].

Keywords

Cite

@article{arxiv.1402.5206,
  title  = {Solution of Certain Pell Equations},
  author = {Zahid Raza and Hafsa Masood Malik},
  journal= {arXiv preprint arXiv:1402.5206},
  year   = {2014}
}

Comments

16 pages

R2 v1 2026-06-22T03:12:56.436Z