有关四维空间的几个问题

Some Remarks on Four-Dimensional Spaces

本文首先说明现实空间是四维的,其次简略回顾了四维空间的研究历史,然后说明四维空间几何学的重要应用,最后阐述四维空问异于三维空问的奇妙性质。

In this note,we represent four remarks on Four-Dimensional Spaces.The first,I agree that our living space is really a four-dimensional space.The second,I give a glimpse on the history of four-dimensional spaces.The third,give some applications on four-dimensinal spaces.The fourth,describe a wonderful character on four-dimensional spaces.