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The Minkowski Measure of Asymmetry for Spherical Bodies of Constant Width 被引量:1
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作者 HOU Peiwen JIN Hailin 《Wuhan University Journal of Natural Sciences》 CAS CSCD 2022年第5期367-371,共5页
In this paper,we introduce the Minkowski measure of asymmetry for the spherical bodies of constant width.Then we prove that the spherical balls are the most symmetric bodies among all spherical bodies of constant widt... In this paper,we introduce the Minkowski measure of asymmetry for the spherical bodies of constant width.Then we prove that the spherical balls are the most symmetric bodies among all spherical bodies of constant width,and the completion of the spherical regular simplexes are the most asymmetric bodies. 展开更多
关键词 spherical convex body spherical body of constant width minkowski measure of asymmetry simplex Reuleaux triangle
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对偶平均Minkowski对称度在Minkowski-临界点处的精确值(英文)
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作者 刘建国 国起 《苏州科技大学学报(自然科学版)》 CAS 2018年第1期16-20,32,共6页
研究对偶平均Minkowski对称度的基本性质,特别地,讨论了凸体n支撑架的存在性和对偶平均Minkowski对称度函数在Minkowski-临界点处的取值。具体地,对半空间族建立了一个Helly型定理,利用此定理证明了任意凸体拥有至少一个n支撑架。文末,... 研究对偶平均Minkowski对称度的基本性质,特别地,讨论了凸体n支撑架的存在性和对偶平均Minkowski对称度函数在Minkowski-临界点处的取值。具体地,对半空间族建立了一个Helly型定理,利用此定理证明了任意凸体拥有至少一个n支撑架。文末,利用Minkowski对称度给出了凸体对偶平均对称度函数在Minkowski-临界点处的表达式。 展开更多
关键词 minkowski对称度 对偶平均minkowski对称度 临界点 临界支撑架
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Stochastic Maximum Principle for Optimal Control of Forward-backward Stochastic Pantograph Systems with Regime Switching
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作者 Shao Dian-guo 《Communications in Mathematical Research》 CSCD 2016年第3期217-228,共12页
We introduce a family of measures(functions) of asymmetry for convex bodies and discuss their properties. It turns out that this family of measures shares many nice properties with the mean Minkowski measures. As th... We introduce a family of measures(functions) of asymmetry for convex bodies and discuss their properties. It turns out that this family of measures shares many nice properties with the mean Minkowski measures. As the mean Minkowski measures describe the symmetry of lower dimensional sections of a convex body, these new measures describe the symmetry of lower dimensional orthogonal projections. 展开更多
关键词 mean minkowski measure asymmetry symmetry simplex
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