diophantine analysis
丢番图分析
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Diophantine \Di`o*phan"tine\, a.
Originated or taught by Diophantus, the Greek writer on
algebra.
{Diophantine analysis} (Alg.), that branch of indeterminate
analysis which has for its object the discovery of
rational values that satisfy given equations containing
squares or cubes; as, for example, to find values of x and
y which make x^{2} + y^{2} an exact square.