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COCO
2005
Springer
106views Algorithms» more  COCO 2005»
15 years 10 months ago
The Complexity of the Inertia and Some Closure Properties of GapL
The inertia of an n × n matrix A is defined as the triple (i+(A), i−(A), i0(A)), where i+(A), i−(A), and i0(A) are the number of eigenvalues of A, counting multiplicities, w...
Thanh Minh Hoang, Thomas Thierauf
IPSN
2005
Springer
15 years 10 months ago
Coverage and hole-detection in sensor networks via homology
We consider coverage problems in sensor networks of stationary nodes with minimal geometric data. In particular, there are no coordinates and no localization of nodes. We introduc...
Robert Ghrist, Abubakr Muhammad
FASE
2004
Springer
15 years 9 months ago
Actor-Centric Modeling of User Rights
Abstract. In this paper we present a novel approach for the predicative specification of user rights in the context of an object oriented use case driven development process. We e...
Ruth Breu, Gerhard Popp
ISSAC
2004
Springer
91views Mathematics» more  ISSAC 2004»
15 years 9 months ago
A poly-algorithmic approach to simplifying elementary functions
Simplification has been long recognised to be a fundamental problem within computer algebra[17]. However, even for the class of elementary functions, it has not been resolved in ...
James C. Beaumont, Russell J. Bradford, James H. D...
ER
2003
Springer
86views Database» more  ER 2003»
15 years 9 months ago
An Interpolated Volume Model for Databases
In this paper we present a volume data model amenable to querying volumes in databases. Unlike most existing volume models, which are directed towards specific applications (notab...
Tianqiu Wang, Simone Santini, Amarnath Gupta