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This site is dedicated to objects in discrete geometry and their abstraction in terms of oriented matroids.
Use the navigation bar on the top of this page or the following links to access
If you are interested to work with the data base, please send an E-mail to get access to data and C source code.
2021 January 23: After almost 20 years at ETH Zurich (on http://www.om.math.ethz.ch) the Homepage of Oriented Matroids has moved here to https://finschi.com/math/om/.
2010 December 21: Added the classes of uniform oriented matroids of 9 elements and rank 4 computed by Sonoko Moriyama (University of Tokyo) using Lukas Finschi's code.
2001 November 2: Preliminary release of this site. See Dissertation (Ph.D. thesis) of Lukas Finschi for detailed information about the project and its background.