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geometry > algebraic geometry > Diophantine geometry > Diophantine equation > Legendre's three-square theorem

number > number theory > Diophantine geometry > Diophantine equation > Legendre's three-square theorem

... > mathematical analysis > function > elementary function > polynomial > polynomial equation > Diophantine equation > Legendre's three-square theorem

algebra > polynomial > polynomial equation > Diophantine equation > Legendre's three-square theorem

mathematical analysis > equation > polynomial equation > Diophantine equation > Legendre's three-square theorem

number > number theory > analytic number theory > additive number theory > Legendre's three-square theorem