English: This is a demonstration of traditionalist based bias as one may argue that Pythagorean triples should be represented as (a, b, c). In fact c is redundant because it can be calculated as square root of (a2 + b2). On the other hand it is a bias approach to reduce the inherent properties of the nodes to a single key as done in 2011 in file:Pythagorean.tree.svg.
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Pythagorean pairs presented as a succession of the generations 1 to generation 4 of the related primitive [[:en:Pythagorean triple|]]s as an alternative codifications of the Berggrens's three