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» On the bounded integer programming
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ENDM
2007
96views more  ENDM 2007»
13 years 11 months ago
Sub-Ramsey Numbers for Arithmetic Progressions and Schur Triples
For a given positive integer k, sr(m, k) denotes the minimal positive integer such that every coloring of [n], n ≥ sr(m, k), that uses each color at most k times, yields a rainb...
Jacob Fox, Veselin Jungic, Rados Radoicic
ATMOS
2007
152views Optimization» more  ATMOS 2007»
14 years 22 days ago
Solution of the Train Platforming Problem
In this paper we study a general formulation of the train platforming problem, which contains as special cases all the versions previously considered in the literature as well as a...
Alberto Caprara, Laura Galli, Paolo Toth
CORR
2007
Springer
68views Education» more  CORR 2007»
13 years 11 months ago
An Improved Tight Closure Algorithm for Integer Octagonal Constraints
Integer octagonal constraints (a.k.a. Unit Two Variables Per Inequality or UTVPI integer constraints) constitute an interesting class of constraints for the representation and solu...
Roberto Bagnara, Patricia M. Hill, Enea Zaffanella
IPCO
2010
174views Optimization» more  IPCO 2010»
14 years 19 days ago
On Lifting Integer Variables in Minimal Inequalities
This paper contributes to the theory of cutting planes for mixed integer linear programs (MILPs). Minimal valid inequalities are well understood for a relaxation of an MILP in tab...
Amitabh Basu, Manoel B. Campêlo, Michele Con...
IPCO
2008
188views Optimization» more  IPCO 2008»
14 years 19 days ago
Binary Positive Semidefinite Matrices and Associated Integer Polytopes
We consider the positive semidefinite (psd) matrices with binary entries. We give a characterisation of such matrices, along with a graphical representation. We then move on to co...
Adam N. Letchford, Michael M. Sørensen