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| DOI | 10.1016/J.EJC.2023.103706 | ||||
| Año | 2023 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
A classic problem connecting algebraic and geometric combinatorics is the realization problem: given a poset, determine whether there exists a polytope whose face lattice is the poset. In 1990s, Kapranov defined a poset as a hybrid between the face poset of a permutohedron and that of an associahedron, and he asked whether this poset is realizable. Shortly after his question was posed, Reiner and Ziegler provided a realization. Based on our previous work on the nested braid fan, we provide in this paper a different realization of Kapranov's poset by constructing the vertex set and the normal fan of a permuto-associahedron simultaneously.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Castillo, Federico | Hombre |
Pontificia Universidad Católica de Chile - Chile
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| 2 | Liu, Fu | - |
University of California, Davis - Estados Unidos
UNIV CALIF DAVIS - Estados Unidos |
| Fuente |
|---|
| National Science Foundation |
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| NSF |
| Fondecyt regular grant |
| Simons Foundation |
| Division Of Mathematical Sciences; Direct For Mathematical & Physical Scien |
| Direct For Mathematical & Physical Scien; Division Of Mathematical Sciences |
| Agradecimiento |
|---|
| We thank Vic Reiner for many insightful comments and the anonymous referees for suggestions to improve the presentation. This project began when the authors were attending the program “Geometric and Topological Combinatorics” at the Mathematical Sciences Research Institute in Berkeley, California, during the Fall 2017 semester, and they were partially supported by the NSF grant DMS-1440140 . The first named author is also partially supported by FONDECYT Grant 1221133 , and the second named author is partially supported by a grant from the Simons Foundation #426756 and an NSF grant #2153897-0 . |
| Federico Castillo is partially supported by FONDECYT Regular Grant #1221133. 2 Fu Liu is partially supported by a grant from the Simons Foundation #426756 and an NSF grant #2153897-0. |