Abstract
For linear projections of polytopes and fans of cones we introduce some new objects such as: virtual chambers, virtual cones and (locally) coherent costrings. Virtual chambers (cones) generalize real chambers (cones), while (locally) coherent costrings are linear dual to (locally) coherent strings. We establish various correspondences for these objects and their connections to toric geometry.
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Hu Combinatorics and Quotients of Toric Varieties. Discrete Comput Geom 28, 151–174 (2002). https://doi.org/10.1007/s00454-002-2757-9
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DOI: https://doi.org/10.1007/s00454-002-2757-9