88
Voted
DM
2008
15 years 23 days ago
2008
By the relationship between the Walsh spectra at partial points and the Walsh spectra of its sub-functions, by the action of general linear group on the set of Boolean functions, ...
78
Voted
DM
2008
15 years 23 days ago
2008
LR design is introduced by the second author in his recent paper, and it plays a very important role in the construction of LKTS (a large set of disjoint Kirkman triple system). I...
54
Voted
DM
2008
15 years 23 days ago
2008
116
Voted
DM
2008
15 years 23 days ago
2008
A weighted graph is one in which every edge e is assigned a nonnegative number w(e), called the weight of e. The weight of a cycle is defined as the sum of the weights of its edge...
86
Voted
DM
2008
15 years 23 days ago
2008
A simple graph G is k-ordered (respectively, k-ordered hamiltonian), if for any sequence of k distinct vertices v1, . . . , vk of G there exists a cycle (respectively, hamiltonian...
94
Voted
DM
2008
15 years 23 days ago
2008
Many interesting combinatorial objects are enumerated by the k-Catalan numbers, one possible generalization of the Catalan numbers. We will present a new combinatorial object that...
58
Voted
DM
2008
15 years 23 days ago
2008
51
Voted
DM
2008
15 years 23 days ago
2008
49
Voted
DM
2008
15 years 23 days ago
2008
DM
2008
15 years 23 days ago
2008
A sequence d = (d1, d2,