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m个d-空间之间复合映射的不动点 总被引:3,自引:0,他引:3
给出了m个d-空间之间复合映射在压缩和扩张条件下的几个不动点定理。 相似文献
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In this paper, we study the properties of the zero set of a homotopy H: I~m×[0, 1]→ and its piecewise linear approximation φ_((?)4): I~m×[0, 1]→R~m, These properties are very important for the homotopy simplex pivot algorithm. However, we prove that for almost every polynomial mapping the zero set of linear homotopy H(z, t) =tp(z)+(1-t)Q(z) consists of q=multiply form j=1 to n(q_j) disjoint differential curves, and the zero set of its piecewise linear approximation φ_(δ4), consists of some broken lines. Where δ_4→0, these broken lines tend to differential curves in the zero srt of H. 相似文献
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设 M 为 n 1 维单位球面sn 1(1) 中的一个极小闭超曲面,如果 n≤S≤n 2/3,则有 S=n 且 M 与某一 Clifford 环面Sm(√m/n)×Sn-m(√(n-m)/n)等距. 相似文献