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EJC
2010
13 years 7 months ago
2010
We consider plane trees whose vertices are given labels from the set {1, 2, . . . , k} in such a way that the sum of the labels along any edge is at most k + 1; it turns out that ...
EJC
2010
13 years 7 months ago
2010
A classical result of Euler states that the tangent numbers are an alternating sum of Eulerian numbers. A dual result of Roselle states that the secant numbers can be obtained by a...
AUTOMATICA
2006
13 years 7 months ago
2006
A navigation functions' based methodology, established in our previous work for centralized multiple robot navigation, is extended to address the problem of decentralized nav...
DM
2007
13 years 7 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...
ARSCOM
2005
13 years 7 months ago
2005
We look at binary strings of length n which contain no odd run of zeros and express the total number of such strings, the number of zeros, the number of ones, the total number of ...