我始终没有真正地领会代数学在几何学上的应用。
I have never got so far as to understand properly the application of algebra to geometry.
极限思想在现代数学乃至物理等学科中有广泛的应用，这是由它本身固有的思维功能所决定的。
The Limit cognition has an extensive application in modern mathematics, as well as physics etc, which is determined by its inherent function of reasoning.
由于集值算子在现代数学的广泛应用，本文还研讨了关于集值算子方程解的存在性；
Due to the wide applications of setvalued operators in modern mathematics, the solvability of the setvalued operator equations are studied.
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