Kokern cokernel上核
discontinuous cokernel不连续余核
cokernel filter余核滤子
difference cokernel[数] 差分上核
cokernel pair[数] 上核对
cokernel of a morphism[数] 射的上核
kernel and cokernel核与上核
cokernel of a couple耦合的上核
cokernel space of operator算子的协核空间