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arXiv 2007.05599math.CO
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球面设计覆盖半径的线性规划界

Linear programming bounds for covering radius of spherical designs

Peter Boyvalenkov, Maya Stoyanova

摘要:

我们应用多项式技术(线性规划),以获得下和上界的覆盖半径的功能,他们的尺寸,强度和基数的球形设计。在内积方面,我们改进了Fazekas和Levenshtein的下界,并提出了新的上界.我们的方法的下界涉及到某些带号测度,其相应的系列正交多项式是正定到一定(适当)的程度。上界基于几何观察和或多或少的标准线性规划技术。

英文摘要:

We apply polynomial techniques (linear programming) to obtain lower and upper bounds on the covering radius of spherical designs as function of their dimension, strength, and cardinality. In terms of inner products we improve the lower bounds due to Fazekas and Levenshtein and propose new upper bounds. Our approach to the lower bounds involves certain signed measures whose corresponding series of orthogonal polynomials are positive definite up to a certain (appropriate) degree. Upper bounds are based on a geometric observation and more or less standard linear programming techniques.

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