A combinatorial theory of Grünbaum's new regular polyhedra, Part II: Complete enumeration.
A combinatorial theory of Grünbaum's new regular polyhedra, Part I: Grünbaum's new regular polyhedra and their automorphism group.
A free group acting without fixed points on the rational unit sphere
A Power Law for the Distortion of Planar Sets.
A Triangle Transformation.
A unified treatment of the theories of matroids with coefficients and of -matroids with coefficients.
Abhandlungen aus dem Grenzgebiete der Mathematik und Philosophie [Book]
About induced orthogonality and generalized reflections of affine coordinate plane of odd order.
Affinspiegelungen in affinen Räumen einer beliebigen Dimension ... 2
An intrinsic characterization of foldings of euclidean space
Andreev’s Theorem on hyperbolic polyhedra
In 1970, E.M.Andreev published a classification of all three-dimensional compact hyperbolic polyhedra (other than tetrahedra) having non-obtuse dihedral angles. Given a combinatorial description of a polyhedron, , Andreev’s Theorem provides five classes of linear inequalities, depending on , for the dihedral angles, which are necessary and sufficient conditions for the existence of a hyperbolic polyhedron realizing with the assigned dihedral angles. Andreev’s Theorem also shows that the resulting...
Arrangements Defined by Unitary Reflection Groups.
Asymptotic dimension of coarse spaces.
Automorphisms of nearly finite Coxeter groups.