二次形式的度量标准形式

metric quadratic form discriminant of quadratic form metric form quadratic form normal form fundamental metric form real quadratic form reduced ternary quadratic form negative definite quadratic form compound quadratic form positive definite quadratic form definite quadratic form polar of a quadratic form normal form of the characteristic symmetric quadratic form characteristic quadratic form irreducible quadratic form properly primitive quadratic form negative semidefinite quadratic form ternary quadratic form