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EJC
2008
13 years 10 months ago
2008
We introduce a notion of Dyck paths with coloured ascents. For several ways of colouring, when the set of colours is itself some class of lattice paths, we establish bijections be...
DM
2006
13 years 10 months ago
2006
We study generating functions for the number of even (odd) permutations on n letters avoiding 132 and an arbitrary permutation on k letters, or containing exactly once. In sever...
CGF
2000
13 years 9 months ago
2000
Geometric acoustic modeling systems spatialize sounds according to reverberation paths from a sound source to a receiver to give an auditory impression of a virtual 3D environment...
COLING
2000
13 years 9 months ago
2000
s; these annotations provide an abstract description of the effects of particular linguistic choices, allowing the planner to evaluate these choiceswithout needing any linguistic k...
COMBINATORICS
2000
13 years 9 months ago
2000
Let An denote the number of objects of some type of "size" n, and let Cn denote the number of these objects which are connected. It is often the case that there is a rel...