Congruent Number: Mathematics, Integer, Right Triangle, Rational Number

Tunnell's Theorem: Congruent Number Problem, Rational

Heronian Triangle: Geometry, Triangle, Rational Number

Embedding: Mathematics, Mathematical structure, Group (mathematics), Subgroup, Injective function, Category theory, Morphism,...

Brahmagupta Fibonacci Identity: Algebra, Closure (mathematics), Lagrange's identity, Polynomial expansion, Integer, Rational...