No mathematician is infallible;he may make mistakes,but he must not hedge.

没有一位家是一贯正确的;他可能会犯错误,但他绝不会回避任何一个问题。

An eminent musicologist, mathematician and calendarist, who was honored to be “oriental personage of artistic encyclopedia type”.

明代杰出乐律家、算家和历家，被西赞誉“百科艺术全书式的人”。

This thesis makes an exposition of the mathematics logicism thought of Russell ,the great mathematician and logician in phytogeny of logic.

本文对伟大的家和逻辑家伯特兰·罗素的逻辑主义思想进行了研究和探讨。