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Universal circuit matrix for adjacency graphs of feedback functions

open access: yesDiscrete Mathematics, 1994
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
J. Zurawiecki
openaire   +3 more sources

On the main eigenvalues of universal adjacency matrices and u-controllable graphs [PDF]

open access: yes, 2015
A universal adjacency matrix U of a graph G is a linear combination of the 0–1 adjacency matrix A, the diagonal matrix of vertex degrees D, the identity matrix I and the matrix J each of whose entries is 1.
Farrugia, Alexander, Sciriha, Irene
core   +2 more sources

The algebra of adjacency patterns: Rees matrix semigroups with reversion [PDF]

open access: yesFields of Logic and Computation, 2009
We establish a surprisingly close relationship between universal Horn classes of directed graphs and varieties generated by so-called adjacency semigroups which are Rees matrix semigroups over the trivial group with the unary operation of reversion.
D.M. Clark   +18 more
core   +3 more sources

Universal quantum computation by discontinuous quantum walk [PDF]

open access: yes, 2010
Quantum walks are the quantum-mechanical analog of random walks, in which a quantum `walker' evolves between initial and final states by traversing the edges of a graph, either in discrete steps from node to node or via continuous evolution under the ...
A. M. Childs   +6 more
core   +2 more sources

Universality in Complex Networks: Random Matrix Analysis [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2007
We apply random matrix theory to complex networks. We show that nearest neighbor spacing distribution of the eigenvalues of the adjacency matrices of various model networks, namely scale-free, small-world and random networks follow universal Gaussian ...
D. M. Cvetković   +3 more
core   +5 more sources

Social Network Analysis: A Novel Paradigm for Improving Community Detection

open access: yesInternational Journal of Computational Intelligence Systems
Social network analysis has become increasingly important across a wide range of fields, offering valuable insights into complex systems of interconnected entities. One of the fundamental challenges in this field is the community detection problem, which
Rodrigo Hernández   +2 more
doaj   +2 more sources

Universal State Transfer on Graphs [PDF]

open access: yes, 2013
A continuous-time quantum walk on a graph $G$ is given by the unitary matrix $U(t) = \exp(-itA)$, where $A$ is the Hermitian adjacency matrix of $G$. We say $G$ has pretty good state transfer between vertices $a$ and $b$ if for any $\epsilon > 0$, there ...
Cameron, Stephen   +5 more
core   +3 more sources

Universally consistent vertex classification for latent positions graphs [PDF]

open access: yes, 2013
In this work we show that, using the eigen-decomposition of the adjacency matrix, we can consistently estimate feature maps for latent position graphs with positive definite link function $\kappa$, provided that the latent positions are i.i.d.
Priebe, Carey E.   +2 more
core   +2 more sources

Hierarchical Decoupling Digital Twin Modeling Method for Topological Systems: A Case Study of Water Purification Systems

open access: yesTechnologies
Digital twins (DTs) have seen widespread application across industries, enabling deep integration of cyber–physical systems. However, previous research has largely focused on domain-specific DTs and lacks a universal, cross-industry modeling framework ...
Xubin Wu   +4 more
doaj   +2 more sources

Universal Matrix Sparsifiers and Fast Deterministic Algorithms for Linear Algebra [PDF]

open access: yesInformation Technology Convergence and Services, 2023
Let $\mathbf S \in \mathbb R^{n \times n}$ satisfy $\|\mathbf 1-\mathbf S\|_2\le\epsilon n$, where $\mathbf 1$ is the all ones matrix and $\|\cdot\|_2$ is the spectral norm. It is well-known that there exists such an $\mathbf S$ with just $O(n/\epsilon^2)
Rajarshi Bhattacharjee   +4 more
semanticscholar   +1 more source

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