Bulletin of Pure & Applied Sciences- Mathematics and Statistics
  • Year: 2018
  • Volume: 37e
  • Issue: 2

On integral solutions of ternary quadratic diophantine equation x2 +16 y2 = z2

1Assistant Professor, Department of Mathematics, Poompuhar College (Autonomous), Melaiyur-609 107, Nagapattinam, Tamilnadu, India. E-mail: ahariganesh84@gmail.com

2Assistant Professor, Department of Mathematics, Annai Vailankanni Arts and Science College, Thanjavur-613 007, Tamilnadu, India. E-mail: kprabu.maths@gmail.com

*Corresponding Author: Ashokan Hari Ganesh, Assistant Professor, Department of Mathematics, Poompuhar College (Autonomous), Melaiyur-609 107, Nagapattinam, Tamilnadu, India. E-mail: ahariganesh84@gmail.com

Online published on 18 December, 2018.

Abstract

In this paper, we analyze the ternary quadratic homogeneous Diophantine equation x2 +16 y2 = z2 for finding its non-zero integer solutions. The proposed equation represents a homogeneous cone and its distinct integer solutions represent a distinct integer point on it. We obtain four different patterns of integer points on the cone. A few interesting properties of different patterns of solutions are presented with the help of special numbers such as Polygonal number, Pyramidal number, Octahedral number, Pronic number, Stella Octangular number and Oblong number. Finally, the three triples of integers generated from the given solution are exhibited which satisfy the equation of the given cone.

Keywords

Ternary quadratic equation, Diophantine equation, integral solution