Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Chapter (peer-reviewed) › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Chapter (peer-reviewed) › peer-review
}
TY - CHAP
T1 - Binary positive semidefinite matrices and associated integer polytopes
AU - Letchford, A N
AU - Sorensen, M M
N1 - The full version of this paper appeared as: A.N. Letchford & M.M. Sørensen (2012) Binary positive semidefinite matrices and associated integer polytopes. Math. Program., 131(1), 253-271.
PY - 2008
Y1 - 2008
N2 - 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 consider the associated integer polytopes. Several important and well-known integer polytopes (the cut, boolean quadric, multicut and clique partitioning polytopes) are shown to arise as projections of binary psd polytopes. Finally, we present various valid inequalities for binary psd polytopes, and show how they relate to inequalities known for the simpler polytopes mentioned. Along the way, we answer an open question in the literature on the max-cut problem, by showing that the so-called k-gonal inequalities define a polytope.
AB - 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 consider the associated integer polytopes. Several important and well-known integer polytopes (the cut, boolean quadric, multicut and clique partitioning polytopes) are shown to arise as projections of binary psd polytopes. Finally, we present various valid inequalities for binary psd polytopes, and show how they relate to inequalities known for the simpler polytopes mentioned. Along the way, we answer an open question in the literature on the max-cut problem, by showing that the so-called k-gonal inequalities define a polytope.
U2 - 10.1007/978-3-540-68891-4_9
DO - 10.1007/978-3-540-68891-4_9
M3 - Chapter (peer-reviewed)
SN - 3540688862
T3 - Lecture Notes in Computer Science
SP - 125
EP - 139
BT - Integer Programming and Combinatorial Optimization
A2 - Lodi, Andrea
A2 - Panconesi, Alessandro
A2 - Rinaldi, Giovanni
PB - Springer
CY - Berlin
T2 - 13th International IPCO Conference
Y2 - 26 May 2008 through 28 May 2008
ER -