Using the homotopy mapping theory, a class of nonlinear problems were studied. 摘要利用同伦映射理论,本文研究了一类非线性问题。
The abduction mapping method was introduced to deduce the transformation relation between the non-unbendable surface and the flat surface. 利用微分几何中的诱导映射理论求得非可展曲面到平面域内的变换关系。