Results 61 to 70 of about 956,253 (229)

Spectral Theory For Strongly Continuous Cosine

Concrete Operators, 2021
Let (C(t))t∈ℝ be a strongly continuous cosine family and A be its infinitesimal generator. In this work, we prove that, if C(t) – cosh λt is semi-Fredholm (resp.
Boua Hamid
doaj   +1 more source

Photoemission Beyond the Sudden Approximation

, 2005
The many-body theory of photoemission in solids is reviewed with emphasis on methods based on response theory. The classification of diagrams into loss and no-loss diagrams is discussed and related to Keldysh path-ordering book-keeping.
Almbladh C-O, Almbladh C-O, Bardyszewski W, Bechstedt F, Carl-Olof Almbladh, Chastenet D, Einstein A, Hedin L, Hermeking H, Hüfner S, Inglesfield J, Kadano L P, Keldysh L V, Keldysh L V, Langreth D C, Langreth D C, Liebsch A, Liebsch A, Mahan G D, McMullen T, Pendry J B, S D Kevan (Ed), Schaich W L, Schattke W   +23 more
core   +1 more source

A PROOF OF THE DISCRETENESS OF THE BOSONIC MEMBRANE SPECTRUM // UNA PRUEBA DE LA DISCRETITUD DEL ESPECTRO DE LA MEMBRANA BOSÓNICA ABIERTA

Publicaciones en Ciencias y Tecnología, 2013
Using an spectral theorem for Schrödinger like equations, we present a proof of the discreteness of the spectrum for bosonic membrane in a .at minkowski space.
Rafael Torrealba Suárez
doaj  

Network Density of States

, 2019
Spectral analysis connects graph structure to the eigenvalues and eigenvectors of associated matrices. Much of spectral graph theory descends directly from spectral geometry, the study of differentiable manifolds through the spectra of associated ...
Benson, Austin R., Bindel, David, Dong, Kun   +2 more
core   +1 more source

Irregular conformal block, spectral curve and flow equations

, 2016
Irregular conformal block is motivated by the Argyres-Douglas type of N=2 super conformal gauge theory. We investigate the classical/NS limit of the irregular conformal block using spectral curve on a Riemann surface with irregular punctures, which is ...
Choi, Sang Kwan, Rim, Chaiho, Zhang, Hong   +2 more
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Spectral theory [PDF]

Bulletin of the American Mathematical Society, 1943
Not ...
openaire   +2 more sources

Semigroups and Evolution Equations in Modular Function Spaces

Axioms
This paper develops the theory of strongly continuous semigroups and abstract evolution equations in modular function spaces. We study the autonomous problem u˙(t)=Bu(t) with initial condition u(0)=u0∈Lρ, where B is the infinitesimal generator of a ...
Mostafa Bachar
doaj   +1 more source

Spectral analysis for the exceptional Xm-Jacobi equation

Electronic Journal of Differential Equations, 2015
We provide the mathematical foundation for the $X_m$-Jacobi spectral theory. Namely, we present a self-adjoint operator associated to the differential expression with the exceptional $X_m$-Jacobi orthogonal polynomials as eigenfunctions.
Constanze Liaw, Lance Littlejohn, Jessica Stewart Kelly   +2 more
doaj  

Persistent spectral theory-guided protein engineering. [PDF]

Nat Comput Sci, 2023
Qiu Y, Wei GW, Wei GW.
europepmc   +1 more source

A spectral theory for Wright's inbreeding coefficients and related quantities. [PDF]

PLoS Genet, 2021
François O, Gain C.
europepmc   +1 more source