Results 61 to 70 of about 41,274 (203)

Products of positive semidefinite matrices

open access: yesLinear Algebra and its Applications, 1988
The author proves that a matrix T is the product of finitely many nonnegative matrices if and only if det(T)\(\geq 0\) and in this case, five such matrices are sufficient.
openaire   +1 more source

Measured‐State Conditioned Recursive Feasibility for Stochastic Model Predictive Control

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT In this paper, we address the problem of designing stochastic model predictive control (SMPC) schemes for linear systems affected by unbounded disturbances. The contribution of the paper is rooted in a measured‐state initialization strategy. First, due to the nonzero probability of violating chance‐constraints in the case of unbounded noise ...
Mirko Fiacchini   +2 more
wiley   +1 more source

Bounds of the logarithmic mean [PDF]

open access: yes, 2013
We give tight bounds for logarithmic mean. We also give new Frobenius norm inequalities for two positive semidefinite matrices. In addition, we give some matrix inequalities on matrix power mean.Comment: The second assertion in (i) of Proposition 5.2 was
Furuichi, Shigeru, Yanagi, Kenjiro
core   +2 more sources

Binary Positive Semidefinite Matrices and Associated Integer Polytopes [PDF]

open access: yesMathematical Programming, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Letchford, Adam N.   +1 more
openaire   +3 more sources

The role of identification in data‐driven policy iteration: A system theoretic study

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
Abstract The goal of this article is to study fundamental mechanisms behind so‐called indirect and direct data‐driven control for unknown systems. Specifically, we consider policy iteration applied to the linear quadratic regulator problem. Two iterative procedures, where data collected from the system are repeatedly used to compute new estimates of ...
Bowen Song, Andrea Iannelli
wiley   +1 more source

Separability of symmetric states and vandermonde decomposition

open access: yesNew Journal of Physics, 2020
Symmetry is one of the central mysteries of quantum mechanics and plays an essential role in multipartite entanglement. In this paper, we consider the separability problem of quantum states in the symmetric space.
Lilong Qian, Lin Chen, Delin Chu
doaj   +1 more source

Positive Semidefinite Metric Learning Using Boosting-like Algorithms [PDF]

open access: yes, 2012
The success of many machine learning and pattern recognition methods relies heavily upon the identification of an appropriate distance metric on the input data.
Hengel, Anton van den   +3 more
core   +3 more sources

When wine walked into grocery stores: Examining the (un)intended economic consequences of wine Sale reform in Tennessee

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Alcohol policy liberalization is a contentious issue in the United States, including debates over whether grocery stores should be allowed to sell wine. This issue reflects a dilemma between accommodating consumer convenience, promoting wine industry growth, and generating tax revenue, versus concerns about potential harm to liquor stores ...
Jiayu Sun   +3 more
wiley   +1 more source

Block Factor-width-two Matrices and Their Applications to Semidefinite and Sum-of-squares Optimization

open access: yes, 2020
Semidefinite and sum-of-squares (SOS) optimization are fundamental computational tools in many areas, including linear and nonlinear systems theory. However, the scale of problems that can be addressed reliably and efficiently is still limited.
Papachristodoulou, Antonis   +2 more
core  

Functions Operating on Positive Semidefinite Quaternionic Matrices

open access: yesMonatshefte f�r Mathematik, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

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