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WG
2004
Springer
15 years 7 months ago
Treelike Comparability Graphs: Characterization, Recognition, and Applications
An undirected graph is a treelike comparability graph if it admits a transitive orientation such that its transitive reduction is a tree. We show that treelike comparability graphs...
Sabine Cornelsen, Gabriele Di Stefano
CORR
2010
Springer
190views Education» more  CORR 2010»
15 years 2 months ago
Overlap properties of geometric expanders
The overlap number of a finite (d + 1)-uniform hypergraph H is the largest constant c(H) (0, 1] such that no matter how we map the vertices of H into Rd , there is a point covered...
Jacob Fox, Mikhail Gromov, Vincent Lafforgue, Assa...
120
Voted
MP
2010
156views more  MP 2010»
15 years 27 days ago
Representing the space of linear programs as the Grassmann manifold
: Each linear program (LP) has an optimal basis. The space of linear programs can be partitioned according to these bases, so called the basis partition. Discovering the structures...
Gongyun Zhao
COMBINATORICS
2000
129views more  COMBINATORICS 2000»
15 years 2 months ago
Combinatorial statistics on type-B analogues of noncrossing partitions and restricted permutations
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...
Rodica Simion
112
Voted
RSCTC
2004
Springer
121views Fuzzy Logic» more  RSCTC 2004»
15 years 7 months ago
On the Correspondence between Approximations and Similarity
Abstract. This paper focuses on the use and interpretation of approximate databases where both rough sets and indiscernibility partitions are generalized and replaced by approximat...
Patrick Doherty, Andrzej Szalas