Toric symplectic geometry and full spark frames
Toric symplectic geometry and full spark frames
复制标题
环面辛几何和全火花框架
DOI:
10.1016/j.acha.2022.07.004
复制
发表时间:
2022
影响因子:
2.5
通讯作者:
Shonkwiler, Clayton
中科院分区:
文献类型:
--
作者:
Needham, Tom;Shonkwiler, Clayton
The collection of d× N complex matrices with prescribed column norms and singular values forms an algebraic variety, which we refer to as a frame space. Elements of frame spaces—ie, frames—are used to give robust signal representations, so that geometrical properties of frame spaces are of interest to the signal processing community. This paper is concerned with the question: what is the probability that a frame drawn at random from a given frame space has the property that any subset of d of its columns gives a basis for C d? We show that the probability is one, generalizing recent work of Cahill, Mixon, and Strawn. To prove this, we show that frame spaces are related to highly structured objects called toric symplectic manifolds. As another application, we characterize the norm and spectral data for which the corresponding frame space has singularities, answering an open question in the literature.
登录
查看更多内容
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
Reyer Sjamaar
通讯作者:
Reyer Sjamaar
影响因子:
1.7
作者:
V. Guillemin;S. Sternberg
通讯作者:
S. Sternberg
DOI:
--
发表时间:
2014
期刊:
European journal of combinatorics (Print)
影响因子:
--
作者:
P. Alexandersson
通讯作者:
P. Alexandersson
DOI:
10.1137/16m1068773
发表时间:
2013
期刊:
SIAM J. Appl. Algebra Geom.
影响因子:
--
作者:
Jameson Cahill;D. Mixon;Nate Strawn
通讯作者:
Nate Strawn
影响因子:
0.8
作者:
Tim Haga;Christoph Pegel
通讯作者:
Christoph Pegel