Counting Integer Points of Flow Polytopes
Counting Integer Points of Flow Polytopes
复制标题
计算流多面体的整数点
DOI:
10.1007/s00454-021-00289-1
复制
发表时间:
2021
影响因子:
0.8
通讯作者:
Setiabrata, Linus
中科院分区:
文献类型:
--
作者:
Kapoor, Kabir;Mészáros, Karola;Setiabrata, Linus
The Baldoni–Vergne volume and Ehrhart polynomial formulas for flow polytopes are significant in at least two ways. On one hand, these formulas are in terms of Kostant partition functions, connecting flow polytopes to this classical vector partition function, fundamental in representation theory. On the other hand, the Ehrhart polynomials can be read off from the volume functions of flow polytopes. The latter is remarkable since the leading term of the Ehrhart polynomial of an integer polytope is its volume! Baldoni and Vergne proved these formulas via residues. To reveal the geometry of these formulas, the second author and Morales gave a fully geometric proof for the volume formula and a partial generating function proof for the Ehrhart polynomial formula. The goal of the present paper is to provide a fully geometric proof for the Ehrhart polynomial formula for flow polytopes.
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DOI:
10.1073/pnas.44.6.588
发表时间:
1958-06
影响因子:
11.1
作者:
B. Kostant
通讯作者:
B. Kostant
影响因子:
3
作者:
A. Schrijver
通讯作者:
A. Schrijver
影响因子:
1.1
作者:
L. Hille
通讯作者:
L. Hille
影响因子:
2.7
作者:
J. D. Loera;B. Sturmfels
通讯作者:
B. Sturmfels
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Karola Mészáros;A. Morales
通讯作者:
A. Morales