Tropical flag varieties
Tropical flag varieties
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热带旗帜品种
DOI:
10.1016/j.aim.2021.107695
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发表时间:
2021
影响因子:
1.7
通讯作者:
Zhang, Leon
中科院分区:
文献类型:
--
作者:
Brandt, Madeline;Eur, Christopher;Zhang, Leon
Flag matroids are combinatorial abstractions of flags of linear subspaces, just as matroids are of linear subspaces. We introduce the flag Dressian as a tropical analogue of the partial flag variety, and prove a correspondence between: (a) points on the flag Dressian, (b) valuated flag matroids, (c) flags of projective tropical linear spaces, and (d) coherent flag matroidal subdivisions. We introduce and characterize projective tropical linear spaces, which serve as a fundamental tool in our proof. We apply the correspondence to prove that all valuated flag matroids on ground set up to size 5 are realizable, and give an example where this fails for a flag matroid on 6 elements.
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DOI:
--
发表时间:
2016
期刊:
Journal of Combinatorial Theory
影响因子:
--
作者:
L. Anderson
通讯作者:
L. Anderson
影响因子:
1.6
作者:
X. Fang;E. Feigin;G. Fourier;I. Makhlin
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DOI:
10.1137/110850141
发表时间:
2010
期刊:
SIAM J. Discret. Math.
影响因子:
--
作者:
Kristin M. Shaw
通讯作者:
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影响因子:
1.7
作者:
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N. Bowler
影响因子:
1.7
作者:
Fink A
通讯作者:
Fink A