Results 61 to 70 of about 899,485 (384)

Temporal Graphs and Temporal Network Characteristics for Bio-Inspired Networks during Optimization

open access: yesApplied Sciences, 2022
Temporal network analysis and time evolution of network characteristics are powerful tools in describing the changing topology of dynamic networks. This paper uses such approaches to better visualize and provide analytical measures for the changes in ...
Nicholas S. DiBrita   +4 more
doaj   +1 more source

Szemer\'edi's Regularity Lemma for matrices and sparse graphs

open access: yes, 2010
Szemer\'edi's Regularity Lemma is an important tool for analyzing the structure of dense graphs. There are versions of the Regularity Lemma for sparse graphs, but these only apply when the graph satisfies some local density condition.
Scott, Alexander
core   +2 more sources

Parameter Choices for Sparse Regularization with the $\ell_1$ Norm [PDF]

open access: yes, 2022
We consider a regularization problem whose objective function consists of a convex fidelity term and a regularization term determined by the $\ell_1$ norm composed with a linear transform. Empirical results show that the regularization with the $\ell_1$ norm can promote sparsity of a regularized solution.
arxiv   +1 more source

Theoretical observers for infinite dimensional skew-symmetric systems

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020
The observer construction has a main importance in the control theory and its applications for the systems of infinite dimension. Even if the system’ state has an infinite dimension, its estimation is given using some physical measures of finite ...
Judicael Deguenon, Barbulescu Alina
doaj   +1 more source

Local and Global Existence and Uniqueness of Solution for Time-Fractional Fuzzy Navier–Stokes Equations

open access: yesFractal and Fractional, 2022
Navier–Stokes (NS) equation, in fluid mechanics, is a partial differential equation that describes the flow of incompressible fluids. We study the fractional derivative by using fractional differential equation by using a mild solution.
Kinda Abuasbeh   +3 more
doaj   +1 more source

Regular and completely regular differential operators [PDF]

open access: yesMathematical Notes, 2007
We define the concept of completely regular ordinary differential operators and give various criteria for operators to belong to this class. We give also criteria for Birkhof regularity of ordinary differential operators in terms of the growth of the Green function and basis property.
E. A. Shiryaev, A. A. Shkalikov
openaire   +3 more sources

A regularity structure for rough volatility [PDF]

open access: yesMathematical Finance, 2017
A new paradigm has emerged recently in financial modeling: rough (stochastic) volatility. First observed by Gatheral et al. in high‐frequency data, subsequently derived within market microstructure models, rough volatility captures parsimoniously key ...
Christian Bayer   +4 more
semanticscholar   +1 more source

Analysis of stochastic delay differential equations in the framework of conformable fractional derivatives

open access: yesAIMS Mathematics
In numerous domains, fractional stochastic delay differential equations are used to model various physical phenomena, and the study of well-posedness ensures that the mathematical models accurately represent physical systems, allowing for meaningful ...
Muhammad Imran Liaqat   +4 more
doaj   +1 more source

Reading Accuracy in EFL Students with a Transparent L1 Background – a Case Study from Poland

open access: yesJournal of Language and Education, 2015
Research indicates that L2 reading competence is influenced by L1 reading ability, L2 proficiency, and L2 decoding competence. The present study investigates the significance of two variables, regularity and frequency, in relation to English as a Foreign
Monika Łodej
doaj   +1 more source

$F$-pure homomorphisms, strong $F$-regularity, and $F$-injectivity

open access: yes, 2009
We discuss Matijevic-Roberts type theorem on strong $F$-regularity, $F$-purity, and Cohen-Macaulay $F$-injective (CMFI for short) property. Related to this problem, we also discuss the base change problem and the openness of loci of these properties.
Hashimoto, Mitsuyasu
core   +3 more sources

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