Lagrangian geometry of matroids
Lagrangian geometry of matroids
复制标题
拟阵的拉格朗日几何
DOI:
10.1090/jams/1009
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发表时间:
2023
影响因子:
3.9
通讯作者:
Huh, June
中科院分区:
文献类型:
--
作者:
Ardila, Federico;Denham, Graham;Huh, June
We introduce the conormal fan of a matroid, which is a Lagrangian analog of the Bergman fan of. We use the conormal fan to give a Lagrangian interpretation of the Chern–Schwartz–MacPherson cycle of. This allows us to express the-vector of the broken circuit complex ofin terms of the intersection theory of the conormal fan of. We also develop general tools for tropical Hodge theory to prove that the conormal fan satisfies Poincaré duality, the hard Lefschetz theorem, and the Hodge–Riemann relations. The Lagrangian interpretation of the Chern–Schwartz–MacPherson cycle of, when combined with the Hodge–Riemann relations for the conormal fan of, implies Brylawski’s and Dawson’s conjectures that the-vectors of the broken circuit complex and the independence complex ofare log-concave sequences. References
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DOI:
10.1093/imrn/rnr121
发表时间:
2010
期刊:
arXiv: Algebraic Geometry
影响因子:
--
作者:
A. Gibney;D. Maclagan
通讯作者:
D. Maclagan
影响因子:
1.8
作者:
Lucía López de Medrano;Felipe Rincón;Kristin M. Shaw
通讯作者:
Kristin M. Shaw
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Balin Fleming;K. Karu
通讯作者:
K. Karu
影响因子:
1.4
作者:
Huh, June;Katz, Eric
通讯作者:
Katz, Eric
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
P. Nelson
通讯作者:
P. Nelson