Pythagorean triples, Wikipedia |
Lakshika Gunawardana
Quadratic forms and representations
Part 1 1nd 2
Here are some universal forms from Lakshika (click to display).
(Recall that the quadruple in bold letters turned out to be false)
And here is the Plimpton 322 with Pythagorean triples. Written about 1800 BCE.
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