922 search results - page 120 / 185 » A generalization of the Lin-Zhao theorem |
JCT
2006
13 years 9 months ago
2006
In 2002, De Loera, Peterson and Su proved the following conjecture of Atanassov: let T be a triangulation of a d-dimensional polytope P with n vertices v1, v2, . . . , vn; label t...
DM
2007
13 years 9 months ago
2007
7 We prove for a large class of parameters t and r that a multiset of at most t d−k + r d−k−2 points in PG(d, q) that blocks every k-dimensional subspace at least t times mu...
ENDM
2007
13 years 9 months ago
2007
The circular chromatic number of a graph is a well-studied refinement of the chromatic number. Circular-perfect graphs is a superclass of perfect graphs defined by means of this...
NA
2008
13 years 9 months ago
2008
We extend Clenshaw-Curtis quadrature to the square in a nontensorial way, by using Sloan's hyperinterpolation theory and two families of points recently studied in the framew...
TCS
2008
13 years 9 months ago
2008
The Traverso-Swan theorem says that a reduced ring A is seminormal if and only if the natural homomorphism Pic A Pic A[X] is an isomorphism ([18, 17]). We give here all the detai...