Equality cases for the uncertainty principle in finite Abelian groups

Equality cases for the uncertainty principle in finite Abelian groups
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有限阿贝尔群中不确定性原理的等式情况

DOI:
10.1007/bf03651331
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发表时间:
2010
影响因子:
0.5
通讯作者:
Saifallah Ghobber
Saifallah Ghobber
中科院分区:
--
文献类型:
--
作者:
Aline Bonami;Saifallah Ghobber

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考虑有限阿贝尔群族×,和,其中p,q是两个不同的素数.对于两个第一家庭,我们给出了一个简单的特征,所有的功能,其支持有基数k,而频谱的大小满足极小条件。在第三种情况下,我们对k的大量值进行了计算。这种相等的情况以前是已知的,当k整除群的基数时,或者对于群/ p。
We consider the families of finite Abelian groups ℤ/ p ℤ × ℤ/ p ℤ, ℤ/ p ^2ℤ and ℤ/ p ℤ×ℤ/ q ℤ for p, q two distinct prime numbers. For the two first families we give a simple characterization of all functions whose support has cardinality k while the size of the spectrum satisfies a minimality condition. We do it for a large number of values of k in the third case. Such equality cases were previously known when k divides the cardinality of the group, or for groups ℤ/ p ℤ.
DOI: 10.1016/j.acha.2007.09.008
发表时间: 2006-11
影响因子: 2.5
作者:
F. Krahmer;G. Pfander;Peter Rashkov
通讯作者: F. Krahmer;G. Pfander;Peter Rashkov