The method of exclusions was used by Gauss to solve the quadratic Diophantine equation of the form
(Dickson 2005, pp. 391 and 407).
The method of exclusions was used by Gauss to solve the quadratic Diophantine equation of the form
(Dickson 2005, pp. 391 and 407).
Weisstein, Eric W. "Method of Exclusions." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/MethodofExclusions.html