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» Expanders In Group Algebras
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AI
2008
Springer
13 years 9 months ago
Semiring induced valuation algebras: Exact and approximate local computation algorithms
Local computation in join trees or acyclic hypertrees has been shown to be linked to a particular algebraic structure, called valuation algebra. There are many models of this alge...
Jürg Kohlas, Nic Wilson
IJAC
2010
58views more  IJAC 2010»
13 years 6 months ago
R-Polynomials of Finite Monoids of Lie Type
This paper studies the combinatorics of the orbit Hecke algebras associated with W
Kürsat Aker, Mahir Bilen Can, Müge Taski...
COMBINATORICS
2007
65views more  COMBINATORICS 2007»
13 years 8 months ago
On Certain Integral Schreier Graphs of the Symmetric Group
We compute the spectrum of the Schreier graph of the symmetric group Sn corresponding to the Young subgroup S2 × Sn−2 and the generating set consisting of initial reversals. In ...
Paul E. Gunnells, Richard A. Scott, Byron L. Walde...
JSC
2007
71views more  JSC 2007»
13 years 8 months ago
Rational invariants of a group action. Construction and rewriting
Geometric constructions applied to a rational action of an algebraic group lead to a new algorithm for computing rational invariants. A finite generating set of invariants appear...
Evelyne Hubert, Irina A. Kogan
ENTCS
2006
92views more  ENTCS 2006»
13 years 8 months ago
Nonstandard Meromorphic Groups
Extending the work of [7] on groups definable in compact complex manifolds and of [1] on strongly minimal groups definable in nonstandard compact complex manifolds, we classify al...
Thomas Scanlon