伴性 meaning in English

sex linkage

On self - adjointness of the product of three second - order differential operators
三个二阶微分算子积的自伴性
On [ a , b ] the product l = l2 lt of operator l { and l2 is selfadjoint if and only if 4
讨论一类两个四阶对称微分算式生成的积算子的自伴性； 4
5 . on [ a , b ] the product l = l3l2l { of operator lltl2 and l3 is selfadjoint if and only if a and l2 is selfadjoint . 6
讨论三个正则的s - l算子积的自伴性和一个s - l算子与一个四阶微分算子积情形。
On [ 0 , oo ) the product l = l2lt of operator z , j and l2 isselfadjointifandonly if where 4 5 , c , ? are some ordinary matrix with rank ( a b ) = rank ( c d ) = 4 . 2
关于积算子的自伴性，两个正则或奇异的二阶对称微分算式生成的积算子的自伴性已取得一些结果。