dot The symbol ‘.' used to represent the decimal point and also multiplication. It is also used to represent the derivative of a function, particularly with respect to time, so that ẏ would mean dy/dt.
dot
数学辞典收录了4151条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。