Characterisation of quadratic spaces over the Hilbert field by means of the orthogonality relation [0.03%]
希尔伯特域上二次型的正交关系特征标
Miroslav Korbelář,Jan Paseka,Thomas Vetterlein
Miroslav Korbelář
An orthoset is a set equipped with a symmetric, irreflexive binary relation. With any (anisotropic) Hermitian space H, we may associate the orthoset ( P ( H ) , ⊥ ) , consisting of the set of one-dimensional subspaces of H and the us...
Herbert Edelsbrunner,Anton Nikitenko,Georg Osang
Herbert Edelsbrunner
Given a locally finite set X ⊆ R d and an integer k ≥ 0 , we consider the function w k : Del k ( X ) → R on the dual of the order-k Voronoi tessellation, whose sublevel sets generalize the notion of alpha shapes fro...
Alexander Kreuzer
Alexander Kreuzer
Young Ho Kim
Young Ho Kim
Generalized euclidean and elliptic geometries, their connections and automorphism groups [0.03%]
广义欧氏几何和椭圆几何、它们的连接和自同构群
Helmut Karzel; Silvia Pianta; Rotraut Stanik
Helmut Karzel; Silvia Pianta; Rotraut Stanik
Mohammed Bekkar,Bendehiba Senoussi
Mohammed Bekkar
Amalendu Ghosh,Ramesh Sharma
Amalendu Ghosh
Mazen Bou Khuzam
Mazen Bou Khuzam
Á. G. Horváth
Á. G. Horváth
Qi Guo; HaiLin Jin
Qi Guo; HaiLin Jin