Tres lecciones en combinatoria algebraica. III. Arreglos de hiperplanos
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In this series of three articles, we give an exposition of various results and open problems in three areas of algebraic and geometric combinatorics: totally non-negative matrices, representations of the symmetric group, and hyperplane arrangements. This first part is an introduction to hyperplane arrangements from a combinatorial point of view. ----- En esta serie de tres articulos, damos una exposicion de varios resultados y problemas abiertos en tres areas de la combinatoria algebraica y geometrica: las matrices totalmente no negativas, las representaciones del grupo simetrico, y los arreglos de hiperplanos. Esta tercera parte presenta una introduccion a los arreglos de hiperplanos desde un punto de vista combinatorio.
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