Results 21 to 30 of about 2,883,021 (288)
Critical ideals, minimum rank and zero forcing number [PDF]
There are profound relations between the zero forcing number and minimum rank of a graph. We study the relation of both parameters with a third one, the algebraic co-rank; that is defined as the largest $i$ such that the $i$-th critical ideal is trivial.
Carlos A. Alfaro, J. Lin
semanticscholar +1 more source
State-independent quantum contextuality with projectors of nonunit rank
Virtually all of the analysis of quantum contextuality is restricted to the case where events are represented by rank-one projectors. This restriction is arbitrary and not motivated by physical considerations.
Zhen-Peng Xu +2 more
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Minimum-Rank Dynamic Output Consensus Design for Heterogeneous Nonlinear Multi-Agent Systems [PDF]
In this paper, we propose a new and systematic design framework for output consensus in heterogeneous multi-input multi-output (MIMO) general nonlinear multi-agent systems (MASs) subjected to directed communication topology.
Dinh Hoa Nguyen
semanticscholar +1 more source
Investigating the Efficiency of the 1/N Model in Portfolio Selection [PDF]
Objective: Since Markowitz's (1952) pioneering work on a single-period investment model, mean-variance portfolio optimization problem has become a cornerstone of investment management in both academic and industrial fields.
Reza Raei, Saeed Bajalan, Alireza Ajam
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Maximum nullity and zero forcing of circulant graphs
The zero forcing number of a graph has been applied to communication complexity, electrical power grid monitoring, and some inverse eigenvalue problems.
Duong Linh +4 more
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Reducing the rank of a matroid [PDF]
We consider the rank reduction problem for matroids: Given a matroid $M$ and an integer $k$, find a minimum size subset of elements of $M$ whose removal reduces the rank of $M$ by at least $k$. When $M$ is a graphical matroid this problem is the minimum $
Gwenaël Joret, Adrian Vetta
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Monitoring of aerological risks of accidents in coal mines
The assessment and management of aerological risks in coal mine accidents are based on the development of a data analytics system that hosts design values for various parameters and subsystems related to coal mines, as well as the real-time monitoring of
Balovtsev S. V.
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Minimum rank and zero forcing number for butterfly networks [PDF]
Zero forcing is a graph propagation process introduced in quantum physics and theoretical computer science, and closely related to the minimum rank problem.
Daniela Ferrero +4 more
semanticscholar +1 more source
We correct an error in the original Lemma 3.4 in our paper “Achievable Multiplicity partitions in the IEVP of a graph”’ [Spec. Matrices 2019; 7:276-290.]. We have re-written Section 3 accordingly.
Adm Mohammad +5 more
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Library Services Quality Assessment in Allameh Tabataba'i University Using The Libeb-Kuala Model [PDF]
Assessing the quality of the central library servicesinAllameh Tabataba’i University and identifying the Libqual indicators needed for improvement, are the research objectives.Methodology: The survey research method was applied according to the Libqual ...
Ali Jalalidizji, Leyla Jabari
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