Discrete polymatroids.
Disjoint faces of complementary dimension.
Disks with Special Properties of Densest Packings.
Dissections into equilateral triangles.
Dissections of a Polygon.
Dissections of Regular Polygons into Triangles of Equal Areas.
Distances to spaces of affine Baire-one functions
Let E be a Banach space and let and denote the space of all Baire-one and affine Baire-one functions on the dual unit ball , respectively. We show that there exists a separable L₁-predual E such that there is no quantitative relation between and , where f is an affine function on . If the Banach space E satisfies some additional assumption, we prove the existence of some such dependence.
Distributing points on the sphere. I.
Distribution of lattice points on hyperbolic surfaces
Let two lattices have the same number of points on each hyperbolic surface . We investigate the case when Λ’, Λ” are sublattices of of the same prime index and show that then Λ’ and Λ” must coincide up to renumbering the coordinate axes and changing their directions.
Divisible tilings in the hyperbolic plane.
Domino tilings and products of Fibonacci and Pell numbers.
Double-Lattice Packings of Convex Bodies in the Plane.
Dr Dragomir Lopandić (1929-1981)
Drei- und Viereckspaare, für deren Drei- und Vierecke jeweils zwei Steiner-Symmetrisierungen übereinstimmen.
Dreieckszerlegungen
Du côté de chez Pu
Dual affine isoperimetric inequalities.
Duality in vector optimization. II. Vector quasiconcave programming
Duality in vector optimization. III. Vector partially quasiconcave programming and vector fractional programming
Dürer polyhedra: the dark side of melancholia
Dürer's engraving Melencolia I famously includes a perspective view of a solid polyhedral block of which the visible portion is an 8-circuit bounding a pentagon-triple+triangle patch. The polyhedron is usually taken to be a cube truncated on antipodal corners, but an infinity of others are compatible with the visible patch. Construction of all cubic polyhedra compatible with the visible portion (i.e., Dürer Polyhedra) is discussed, explicit graphs and symmetries are listed for small cases ( ≤ 18...