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Home | Catalog of Oriented Matroids | Catalog of Point Configurations | Catalog of Hyperplane Arrangements | Glossary |
Reorientation Class
The reorientation class of a set of
sign vectors on a
ground set is the
equivalence class defined by reorientations of ,
where a reorientation of is defined as the
operation which reverts for a given subset of
the signs of the
elements belonging to
in every sign vector of .
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