Let a, b, and c1 be positive integers such that a2 + b2 = c2 and a ≤3 b.
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Other choices for variable names include:
x, y, and z
m, n, and p
p, q, and r
α, β, and γ
o (Latin o), ο (Greek omicron), and о (Cyrillic o) (DON'T USE THESE) -
Are these exponents or footnotes? 🤔
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See https://en.wikipedia.org/wiki/Composition_of_relations to get an idea of what ≤3 means. However, since ≤ is reflexive and transitive, that doesn't matter anyway.