维数论（dimension theory)欧几里得空间的维数概念的推广。对于某些拓扑空间指定一个非负整数，称为该空间的维数。
数论网格法适用于几何形状规则和维数不太多的问题，它的误差是真正的误差。
Number theory grid method is suited to the problems of regular geo metric shapes and those of not too more dimensions. Its error is a true error.
运用复变函数论方法处理了二维流动。
Two-dimensional flow was dealt with using the method of functions of complex variables.
自相似测度的研究可以追溯到上个世纪30年代，随着研究的深入，人们逐渐发现它与调和分析、代数数论、动力系统及维数的估计都有密切的联系。
The self-similar measure has been studied since 1930's, revealing connections with harmonic analysis, the theory of algebraic numbers, dynamical systems and Hausdorff dimension estimation.
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