... > mathematical analysis > function > elementary function > polynomial > homogeneous polynomial > quadratic form > composition algebra > quaternion > Hurwitz quaternion

... > algebra > polynomial > homogeneous polynomial > quadratic form > composition algebra > quaternion > Hurwitz quaternion

... > algebra > abstract algebra > algebraic structure > algebra over a field > non-associative algebra > composition algebra > quaternion > Hurwitz quaternion

number > hypercomplex number > quaternion > Hurwitz quaternion

... > algebra > abstract algebra > algebraic structure > associative algebra > quaternion algebra > quaternion > Hurwitz quaternion