5 citations
3 papers
math.QA2004
On bases of centres of Iwahori-Hecke algebras of the symmetric group
Andrew Francis, Lenny Jones
Using norms, the second author constructed a basis for the centre of the Hecke algebra of the symmetric group over $\Q[ξ]$ in 1990. An integral "minimal" basis was later given by t…
math.GT2003★ 5 cited
A New Approach to the Conjugacy Problem in Garside Groups
Volker Gebhardt
The cycling operation endows the super summit set of any element of a Garside group with the structure of a directed graph . We establish that the subset o…
cs.AI2002
Handling Defeasibilities in Action Domains
Yan Zhang
Representing defeasibility is an important issue in common sense reasoning. In reasoning about action and change, this issue becomes more difficult because domain and action relate…