New characterizations of row sufficient matrices
نویسندگان
چکیده
منابع مشابه
New characterizations of row sufficient matrices
Article history: Received 29 September 2008 Accepted 6 January 2009 Available online 14 February 2009 Submitted by R.A. Brualdi Dedicated to the memory of a great scholar and a valued friend, Professor David Gale. AMS classification: 90C20 90C33 15A39 15A63
متن کاملRow Products of Random Matrices
Let ∆1, . . . ,∆K be d × n matrices. We define the row product of these matrices as a d × n matrix, whose rows are entry-wise products of rows of ∆1, . . . ,∆K . This construction arises in certain computer science problems. We study the question, to which extent the spectral and geometric properties of the row product of independent random matrices resemble those properties for a d × n matrix ...
متن کاملCombinatorial Characterizations of K-matrices
We present a number of combinatorial characterizations of Kmatrices. This extends a theorem of Fiedler and Pták on linearalgebraic characterizations of K-matrices to the setting of oriented matroids. Our proof is elementary and simplifies the original proof substantially by exploiting the duality of oriented matroids. As an application, we show that a simple principal pivot method applied to th...
متن کاملSome new sufficient conditions for generalized strictly diagonally dominant matrices
Generalized strictly diagonally dominant matrices have wide applications in science and engineering, but it is very difficult to determine whether a given matrix is a generalized strictly diagonally dominant matrix or not in practice. In this paper, we give several practical conditions for generalized strictly diagonally dominant matrices by constructing different positive diagonal matrix and a...
متن کاملEstimation of matrices with row sparsity
An increasing number of applications is concerned with recovering a sparsity can be defined in terms of lq balls for q 2 [0, 2), defined as Bq(s) = { v = (vi) 2 R2 : n2 ∑
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Linear Algebra and its Applications
سال: 2009
ISSN: 0024-3795
DOI: 10.1016/j.laa.2009.01.010