Symmetry In Theory - Mathematics and Aesthetics
Symplectic packings in cotangent bundles of tori.
Système dynamique à spectre discret et pavage périodique associé à une substitution
On donne une condition combinatoire effective suffisante pour que le sytème dynamique associé à une substitution de type Pisot ait un spectre purement discret. Dans le cas unimodulaire, cette condition est nécessaire dès que la substitution n'a qu'un cobord trivial ; elle est vérifiée si et seulement si le fractal de Rauzy associé à la substitution engendre un pavage auto-similaire et périodique. On en déduit des conditions de connexité des fractals de Rauzy.
Systèmes projectifs d'ensembles convexes compacts
Systems of stochastically independent and normally distributed random points in the Euclidean space .
Systoles et applications selon Gromov
Tangent cones, starshape and convexity.
Tangent segments in Minkowski planes.
Terminal subsets of convex sets in finite-dimensional real normed spaces
Tesselation of a triangle by repeated barycentric subdivision.
Tesselations of multidimensional parallelepipeds.
Tessellations Generated by Hyperplanes.
Testing of convex polyhedron visibility by means of graphs
This paper follows the article by V. Medek which solves the problem of finding the boundary of a convex polyhedron in both parallel and central projections. The aim is to give a method which yields a simple algorithm for the automation of an arbitrary graphic projection of a convex polyhedron. Section 1 of this paper recalls some necessary concepts from the graph theory. In Section 2 graphs are applied to determine visibility of a convex polyhedron.
Tetrahedra on deformed spheres and integral group cohomology.
The isogonal sponges on the cubic lattice.
The action of the symmetric group on a generalized partition semilattice.
The active bijection between regions and simplices in supersolvable arrangements of hyperplanes.
The Aleksandrov-Fenchel type inequalities for volume differences.
The alternating sign matrix polytope.
The angle defect for arbitrary polyhedra.