134 search results - page 15 / 27 » Combinatorics of diagrams of permutations |
COMBINATORICS
2007
13 years 9 months ago
2007
We define a partial order on colored compositions with many properties analogous to Young’s lattice. We show that saturated chains correspond to colored permutations, and that ...
COMBINATORICS
1998
13 years 9 months ago
1998
An n-Venn diagram is a collection of n finitely-intersecting simple closed curves in the plane, such that each of the 2n sets X1 ∩X2 ∩· · ·∩Xn, where each Xi is the open...
COMBINATORICS
2000
13 years 9 months ago
2000
We define type-B analogues of combinatorial statistics previously studied on noncrossing partitions and show that analogous equidistribution and symmetry properties hold in the ca...
SISAP
2008
IEEE
14 years 4 months ago
2008
IEEE
Distance permutation indexes support fast proximity searching in high-dimensional metric spaces. Given some fixed reference sites, for each point in a database the index stores a...
SIAMDM
2010
13 years 4 months ago
2010
Abstract. Squaregraphs were originally defined as finite plane graphs in which all inner faces are quadrilaterals (i.e., 4-cycles) and all inner vertices (i.e., the vertices not in...