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ACS
2004
14 years 9 months ago
2004
In this paper we introduce and study a cohomology theory {Hn(-, A)} for simplicial sets with coefficients in symmetric categorical groups A. We associate to a symmetric categorical...
APAL
2005
14 years 9 months ago
2005
We prove that if G is a group definable in a saturated o-minimal structure, then G has no infinite descending chain of type-definable subgroups of bounded index. Equivalently, G h...
DM
2007
14 years 9 months ago
2007
—We give an inequality for the group chromatic number of a graph as an extension of Brooks’ Theorem. Moreover, we obtain a structural theorem for graphs satisfying the equality...
IIWAS
2004
14 years 11 months ago
2004
Group signature schemes permit a group member signing on messages anonymously and unlinkably on behalf of a group. The anonymity can be revoked when arguments occurred. This paper...
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DAIS
1997
14 years 10 months ago
1997
One of the key arguments for mobile agent systems is the flexible usage of groups of agents. However, none of the existing mobile agent systems supports agent groups. In this pap...