60 search results - page 5 / 12 » combinatorics 1998 |
COMBINATORICS
1998
13 years 6 months ago
1998
The number of noncrossing partitions of {1, 2, . . . , n} with fixed block sizes has a simple closed form, given by Kreweras, and coincides with the corresponding number for nonne...
COMBINATORICS
1998
13 years 6 months ago
1998
The determinant that is present in traditional formulations of multivariate Lagrange inversion causes difficulties when one attempts to obtain asymptotic information. We obtain an...
ICIP
1998
IEEE
14 years 8 months ago
1998
IEEE
Velocity spectra of a flow can be made by ultrasound Doppler measurements. Using only part of the information in these spectra, it is possible to reconstruct the solenoid part and...
COMBINATORICS
1998
13 years 6 months ago
1998
A multimatroid is a combinatorial structure that encompasses matroids, delta-matroids and isotropic systems. This structure has been introduced to unify a theorem of Edmonds on th...
COMBINATORICS
1998
13 years 6 months ago
1998
We show that the moments of the trace of a random unitary matrix have combinatorial interpretations in terms of longest increasing subsequences of permutations. To be precise, we s...