Results 31 to 40 of about 6,490,412 (293)

A review on quantum graphs: From mathematical foundations to applications [PDF]

open access: yesMathematics and Computational Sciences
Quantum graphs provide a rigorous framework for modelling quantum dynamics on network-like structures, where edges represent one-dimensional wires and vertices encode interaction conditions.
Kavya Mangattu Sudheer   +1 more
doaj   +1 more source

Harmonic Analysis and Random Schrödinger Operators [PDF]

open access: yes, 2016
The present volume contains the Proceedings of the International Conference on Spectral Theory and Mathematical Physics held in Santiago de Chile in November ...
Matthias Täufer   +5 more
core   +1 more source

MATHEMATICAL MODELING OF BIOLOGICAL INTERACTIONS: FORMALISMS AND CONTEMPORARY APPLICATIONS

open access: yesAvances en Ciencias e Ingeniería
This paper introduces an advanced mathematical framework for describing biological interactions through spectral graph theory. We examine differential equations coupled with various Laplacians (classical, signless, and normalized) to address competition,
Luis Rojas, Juan Castillo, José García
doaj   +1 more source

The Diagonalizable Nonnegative Inverse Eigenvalue Problem

open access: yesSpecial Matrices, 2018
In this articlewe provide some lists of real numberswhich can be realized as the spectra of nonnegative diagonalizable matrices but which are not the spectra of nonnegative symmetric matrices.
Cronin Anthony G, Laffey Thomas J.
doaj   +1 more source

Spectral theory and nonlinear problems Théorie spectrale et problèmes non-linéaires [PDF]

open access: yesSurveys in Mathematics and its Applications, 2010
We present a Lie algebra theoretical schema leading to integrable systems, based on the Kostant-Kirillov coadjoint action. Many problems on Kostant-Kirillov coadjoint orbits in subalgebras of infinite dimensional Lie algebras (Kac-Moody Lie algebras)
Ahmed Lesfari
doaj  

Orbifold Spectral Theory

open access: yesRocky Mountain Journal of Mathematics, 2001
Let \((M,g)\) be a closed orientable orbifold, (i.e. a \(V\) manifold). The author establishes the basic spectral theory of these singular spaces, generalizing the Sobolev embedding theorem, the Rellich theorem, and the Poincaré inequalities from the smooth setting to this more general setting. The author derives the basic properties of the spectrum of
openaire   +3 more sources

Application of the spectral theory and perturbation theory to the study of Ornstein-Uhlenbeck processes

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2018
The theoretical bases of this paper are the theory of spectral analysis and the theory of singular and regular perturbations. We obtain an approximate price of Ornstein-Uhlenbeck double barrier options with multidimensional stochastic diffusion as ...
I.V. Burtnyak, H.P. Malytska
doaj   +1 more source

Spectral and Oscillation Theory for an Unconventional Fractional Sturm–Liouville Problem

open access: yesFractal and Fractional
Here, we investigate the spectral and oscillation theory for a class of fractional differential equations subject to specific boundary conditions.
Mohammad Dehghan, Angelo B. Mingarelli
doaj   +1 more source

Spectral properties and conformal type of surfaces

open access: yesAnais da Academia Brasileira de Ciências, 2002
In this short note, we announce a result relating the geometry of a riemannian surface to the positivity of some operators on this surface (the operators considered here are of the form surface Laplacian plus a scalar multiple of the curvature function).
PHILIPPE CASTILLON
doaj   +1 more source

Impact of Radiation Therapy on Physical and Psychosocial Health of Adolescents and Young Adults: A Joint Report From the Children's Oncology Group AYA and Radiation Oncology Committees

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani   +7 more
wiley   +1 more source

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