The three algorithms mentioned above have been widely used in the solving of geo physical problems and are a powerful mathematical tool for nonlinear inversion problems.
上述三种用于反演问题求解的算法已广泛地应用在地球物理求解中，已成为求解非线性反问题的有力数学工具。
Methods: Using the MRI inversion recovery technology systemically in theory and get the mathematical expression of the zero signal point.
方法：从理论上对核磁共振成像反转恢复技术进行系统研究，获得零信号点的数学表达式。
In this paper, according to inversion set and its topological space definition, we studied some mathematical definition and their relevant theorem of decision theory, and apply theory to practice.
将决策学中的一些概念推广到反演集合拓扑空间中，给出一些相关的定义、定理及其在实际工作中的应用。
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