Given a Pythagorean triple ,
and
are called Pythagorean fractions. Diophantus showed that the Pythagorean fractions consist precisely of fractions of the form
.
Conway, J. H. and Guy, R. K. "Pythagorean Fractions." In The Book of Numbers. New York: Springer-Verlag, pp. 171-173, 1996.
Eric W. Weisstein. "Pythagorean Fraction." From MathWorld--A Wolfram Web Resource. ../topics/PythagoreanFraction.html
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