2 papers
math.MG2021
Pick's Theorem in Two-Dimensional Subspace of R^3
Lin Si
In this note, we given a version of Pick's theorem for the simple lattice polygon in two-dimensional subspace of R^3.
math.CO2010
The John Theorem for Simplex
Si Lin, Xiong Ge, Leng Gangsong
In this paper, we give a description of the John contact points of a regular simplex. We prove that the John ellipsoid of any simplex is ball if and only if this simplex is regular…