对称双线性泛函 symmetric bilinear functional

有界双线性泛函 [数] bounded bilinear function

连续双线性泛函 [数] continuous bilinear functional

埃尔米特双线性泛函 hermitian bilinear functional

双不变线性泛函 [数] two-sided invariant linear functional

双线性连续泛函 bilinear continuous functional