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math.MG2022★ 1 cited
Borsuk's Problem in Metric Spaces
Jun Wang, Fei Xue, Chuanming Zong
In 1933, K. Borsuk proposed the following problem: Can every bounded set in be divided into subsets of smaller diameters? In 1965, V. G. Boltyanski and I. T. G…
math.MG2022★ 1 cited
Borsuk's partition problem in four-dimensional space
Jun Wang, Fei Xue
In 1933, Borsuk made a conjecture that every -dimensional bounded set can be divided into subsets of smaller diameter. Up to now, the problem is still open for $4\leq n\le…
math.MG2022
Lower Bounds on Lattice Covering Densities of Simplices
Miao Fu, Fei Xue, Chuanming Zong
This paper presents new lower bounds for the lattice covering densities of simplices by studying the Degree-Diameter Problem for abelian Cayley digraphs. In particular, it proves t…