The cohomology of general tensor products of vector bundles on $${\mathbb {P}}^2$$
The cohomology of general tensor products of vector bundles on $${\mathbb {P}}^2$$
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$${mathbb {P}}^2$$ 上向量丛的一般张量积的上同调
DOI:
10.1007/s00029-021-00707-5
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Kopper, John
中科院分区:
文献类型:
--
作者:
Coskun, Izzet;Huizenga, Jack;Kopper, John
Computing the cohomology of the tensor product of two vector bundles is central in the study of their moduli spaces and in applications to representation theory, combinatorics and physics. These computations play a fundamental role in the construction of Brill–Noether loci, birational geometry andS-duality. Using recent advances in the Minimal Model Program for moduli spaces of sheaves on, we compute the cohomology of the tensor product of general semistable bundles on. This solves a natural higher rank generalization of the polynomial interpolation problem. More precisely, letandbe two Chern characters of stable bundles onand assume thatis sufficiently divisible depending on. Letandbe two general stable bundles. We fully compute the cohomology of. In particular, we show that ifWis exceptional, thenhas at most one nonzero cohomology group determined by the slope and the Euler characteristic, generalizing foundational results of Drézet, Göttsche and Hirschowitz. We characterize the invariants of effective Brill–Noether divisors on. We also characterize whenis globally generated. Our computation is canonical given the birational geometry of the moduli space, suggesting a roadmap for tackling analogous problems on other surfaces.
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DOI:
10.1016/j.matpur.2014.02.010
发表时间:
2013-05
期刊:
arXiv: Algebraic Geometry
影响因子:
--
作者:
Izzet Coskun;J. Huizenga
通讯作者:
Izzet Coskun;J. Huizenga
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
J. Drézet
通讯作者:
J. Drézet
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Izzet Coskun;J. Huizenga;Matthew Woolf
通讯作者:
Matthew Woolf
DOI:
10.1090/jag/652
发表时间:
2012
期刊:
arXiv: Algebraic Geometry
影响因子:
--
作者:
J. Huizenga
通讯作者:
J. Huizenga
影响因子:
1.4
作者:
A. Hirschowitz;Yves Laszlo
通讯作者:
Yves Laszlo