4397 search results - page 19 / 880 » Relational Algebra Operations |
JUCS
2008
13 years 7 months ago
2008
: Since all the algebras connected to logic have, more or less explicitely, an associated order relation, it follows that they have two presentations, dual to each other. We classi...
ISSAC
2007
Springer
14 years 1 months ago
2007
Springer
We describe some major recent progress in exact and symbolic linear algebra. These advances concern the improvement of complexity estimates for fundamental problems such as linear...
APAL
2004
13 years 7 months ago
2004
Relation were invented by Tarski and his collaborators in the middle of the twentieth century. The concept of integrality arose naturally early in the history of the subject, and s...
ACS
2008
13 years 7 months ago
2008
EDBT
2010
ACM
14 years 2 months ago
2010
ACM
Querying non-conventional data is recognized as a major issue in new environments and applications such as those occurring in pervasive computing. A key issue is the ability to qu...