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ICALP
2010
Springer
15 years 3 months ago
Testing 2-Vertex Connectivity and Computing Pairs of Vertex-Disjoint s-t Paths in Digraphs
We present an O(m + n)-time algorithm that tests if a given directed graph is 2-vertex connected, where m is the number of arcs and n is the number of vertices. Based on this resul...
Loukas Georgiadis
CCCG
2006
15 years 1 months ago
On Computing Shortest External Watchman Routes for Convex Polygons
We study the relationship between the interior angles of a convex polygon and the lengths of external watchman routes.
Rafa Absar, Sue Whitesides
DCC
2010
IEEE
14 years 12 months ago
Equidistant frequency permutation arrays and related constant composition codes
This paper introduces and studies the notion of an equidistant frequency permutation array (EFPA). An EFPA of length n = m, distance d and size v is defined to be a v
Sophie Huczynska
DAM
2008
101views more  DAM 2008»
14 years 12 months ago
Longest alternating subsequences of k-ary words
Recently, Stanley [13] studied the length of the longest alternating subsequence of a permutation in the symmetric group, where a sequence a, b, c, d, . . . is alternating if a &g...
Toufik Mansour
IPL
2008
87views more  IPL 2008»
14 years 12 months ago
Optimal prefix and suffix queries on texts
Abstract. In this paper, we study a restricted version of the position restricted pattern matching problem introduced and studied M
Maxime Crochemore, Costas S. Iliopoulos, Mohammad ...