无穷小算子 meaning in English

infinitesimal generator
infinitesimal operators

The study of infinitesimal operator on conditional markov process
过程无穷小算子的研究
The description to the infinitesimal operator of the minimal q process
过程的无穷小算子的刻划
A important result abrout the left - infinitesimal operator and the right - resolvent operator of a two - parameters semigraoup
双参数半群的左无穷小算子和右预解算子的一个重要结果