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114
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CDB
2004
Springer
15 years 5 months ago
2004
Springer
Preference queries are relational algebra or SQL queries that contain occurrences of the winnow operator (find the most preferred tuples in a given relation). We present here a nu...
105
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ICALP
2005
Springer
15 years 6 months ago
2005
Springer
The firing rule of Petri nets relies on a residuation operation for the commutative monoid of natural numbers. We identify a class of residuated commutative monoids, called Petri ...
101
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TAMC
2010
Springer
15 years 5 months ago
2010
Springer
We study possible formulations of algebraic propositional proof systems operating with noncommutative formulas. We observe that a simple formulation gives rise to systems at least ...
TON
2002
15 years 3 days ago
2002
Prompted by the advent of quality-of-service routing in the Internet, we investigate the properties that path weight functions must have so that hop-by-hop routing is possible and ...
83
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JLP
2002
15 years 4 days ago
2002
In the setting of program algebra (PGA), a projection from PGAu, i.e., PGA extended with a unit instruction operator, into PGA is defined. This is done via a composition that empl...