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» The Frobenius Problem and Its Generalizations
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DM
2010
83views more  DM 2010»
14 years 10 months ago
Polychromatic colorings of arbitrary rectangular partitions
A general (rectangular) partition is a partition of a rectangle into an arbitrary number of non-overlapping subrectangles. This paper examines vertex colorings using four colors o...
Dániel Gerbner, Balázs Keszegh, Nath...
ALGORITHMICA
2010
115views more  ALGORITHMICA 2010»
14 years 9 months ago
Multi-Color Pebble Motion on Graphs
We consider a graph with n vertices, and p < n pebbles of m colors. A pebble move consists of transferring a pebble from its current host vertex to an adjacent unoccupied verte...
Gilad Goraly, Refael Hassin
LICS
2012
IEEE
13 years 7 days ago
Near Unanimity Constraints Have Bounded Pathwidth Duality
—We show that if a finite relational structure has a near unanimity polymorphism, then the constraint satisfaction problem with that structure as its fixed template has bounded...
Libor Barto, Marcin Kozik, Ross Willard
IPCO
2004
93views Optimization» more  IPCO 2004»
14 years 11 months ago
Semi-continuous Cuts for Mixed-Integer Programming
We study the convex hull of the feasible set of the semi-continuous knapsack problem, in which the variables belong to the union of two intervals. Besides being important in its o...
I. R. de Farias
ECOOPW
1999
Springer
15 years 2 months ago
Flexible Aliasing with Protection
Unwanted effects of aliasing cause encapsulation problems in object oriented programming. Nevertheless, aliasing is part of common and efficient programming techniques for expres...
Günter Kniesel, Dirk Theisen