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Lacunary polynomials in L1: Geometry of the unit sphere
Advances in Mathematics ( IF 1.7 ) Pub Date : 2021-01-25 , DOI: 10.1016/j.aim.2021.107607
Konstantin M. Dyakonov

Let Λ be a finite set of nonnegative integers, and let P(Λ) be the linear hull of the monomials zk with kΛ, viewed as a subspace of L1 on the unit circle. We characterize the extreme and exposed points of the unit ball in P(Λ).



中文翻译:

L 1中的Lacunary多项式:单位球面的几何

设Λ为非负整数的有限集,并设 PΛ 是单项式的线性船体 žķķΛ,被视为的子空间 大号1个在单位圆上 我们描述了单位球的极端和裸露点PΛ

更新日期:2021-01-25
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