在拓扑学中,同胚(homeomorphism、topological isomorphism、bi continuous function)是两个拓扑空间之间的双连续函数。同胚是拓扑空间范畴中的同构。
类似的短语在字典Chinese Polish。 (89) ... 庭园一年生植物 rośliny ogrodowe jednoroczne 同胚 homeomorfizm 土壤植物区系 flora glebowa ...
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Thirdly, we consider the n-dimensional Duffing type equation with damping term. By virtue of homeomorphism, extension and fixed point method, we discuss the existence of periodic solution under the nonresonance condition.
再次,我们考虑n维的带有阻尼项的Duffing型方程,运用同胚延拓及不动点方法,讨论了非共振条件下周期解的存在性问题。
参考来源 - Liénard方程和非共振Duffing方程研究In the last section, we discussed the week homeomorphic classification of graphlike manifolds.
最后一节讨论了图式流形的弱同胚分类。
参考来源 - 关于同伦正则态射及其应用·2,447,543篇论文数据,部分数据来源于NoteExpress
用数学语言表达就是“每个单连通3重(3-manifold)封闭体与一个三维球体同胚(homeomorphic)。”
As mathematicians say, “Every simply connected closed 3-manifold is homeomorphic to a 3-sphere.”
按照数学家们的分类,三叶形是最简单的纽结。 所谓纽结,它是三维空间中不与自己相交的封闭曲线,或者说是三维空间中与圆周同胚的图形。
The trefoil is the simplest knot in mathematicians' classification.
并推广了微分同胚的有关结果。
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