## Detecting Orbitopal Symmetries

Please always quote using this URN: urn:nbn:de:0297-zib-10842
• Orbitopes can be used to handle symmetries which arise in integer programming formulations with an inherent assignment structure. We investigate the detection of symmetries appearing in this approach. We show that detecting so-called orbitopal symmetries is graph-isomorphism hard in general, but can be performed in linear time if the assignment structure is known.

$Rev: 13581$