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Let $\mathcal{Z}$ be a specialization closed subset of $\Spec R$ and $X$ a homologically left-bounded complex with finitely generated homologies. We establish Faltings' Local-global Principle and Annihilator Theorems for the local…

Commutative Algebra · Mathematics 2018-07-10 Kamran Divaani-Aazar , Majid Rahro Zargar

We consider the Fredholm one-dimensional boundary-value problems in Sobolev spaces.We have obtained several important results about the indixes of functional operators, the criterion of their correct well-posedness, the criterion of the…

Classical Analysis and ODEs · Mathematics 2019-12-13 Olena Atlasiuk , Vladimir Mikhailets

We provide sufficient conditions of local solvability for partial differential operators with variable Colombeau coefficients. We mainly concentrate on operators which admit a right generalized pseudodifferential parametrix and on operators…

Analysis of PDEs · Mathematics 2009-02-04 Claudia Garetto

In analogy to what happens in finite dimensions we state the Normal Form Theorem for k-singularities, introduced in the previous paper of the series. By means of that we study the local behaviour near a singularity i.e. we deduce local…

Functional Analysis · Mathematics 2014-04-22 Ferrante Balboni , Flavio Donati

By the introduction of a generalized Evans function defined by an appropriate 2-modified Fredholm determinant, we give a simple proof of convergence in location and multiplicity of Hill's method for numerical approximation of spectra of…

Numerical Analysis · Mathematics 2010-09-21 Mathew A. Johnson , Kevin Zumbrun

We prove a chain rule of local type for a class of fractional hypoelliptic equations of Kolmogorov-Fokker-Planck type. We introduce a semigroup based notion of nonlocal \emph{carr\'e du champ} which works successfully in situations in which…

Analysis of PDEs · Mathematics 2019-10-22 Federico Buseghin , Nicola Garofalo

We prove polynomial and exponential decay at infinity of eigen-vectors of partial differential operators related to radiation problems for time-harmonic generalized Maxwell systems in an exterior domain with non-smooth inhomogeneous,…

Analysis of PDEs · Mathematics 2011-05-23 Dirk Pauly

In this paper we prove the existence of a uniform bound for Frobenius test exponents for parameter ideals of a local ring $(R, \frak m)$ of prime characteristic in the following cases: (1) $R$ is generalized Cohen-Macaulay. Our proof is…

Commutative Algebra · Mathematics 2018-10-17 Pham Hung Quy

The semi-classical study of a 1-dimensional Schr\"odinger operator near a non-degenerate maximum of the potential has lead Colin de Verdi\`ere and Parisse to prove a microlocal normal form theorem for any 1-dimensional pseudo-differential…

Analysis of PDEs · Mathematics 2007-05-23 Vu Ngoc San

In a previous work, we proved an index theorem for families of asymptotically hyperbolic discrete dynamical systems and obtained applications to bifurcation theory. A weaker and far more common assumption than asymptotic hyperbolicity is…

Functional Analysis · Mathematics 2020-03-30 Robert Skiba , Nils Waterstraat

The paper concerns nonlocal time-periodic boundary value problems for first-order Volterra integro-differential hyperbolic systems with boundary inputs. The systems are subjected to integral boundary conditions. Under natural regularity…

Analysis of PDEs · Mathematics 2025-12-10 I. Kmit , R. Klyuchnyk

We revisit the computation of (2-modified) Fredholm determinants for operators with matrix-valued semi-separable integral kernels. The latter occur, for instance, in the form of Green's functions associated with closed ordinary differential…

Spectral Theory · Mathematics 2007-05-23 Fritz Gesztesy , Konstantin A. Makarov

In this paper we study the semi-Fredholm property of band-dominated operators $A$ and prove that it already implies the Fredholmness of $A$ in all cases where this is not disqualified by obvious reasons. Moreover, this observation is…

Functional Analysis · Mathematics 2015-11-23 Markus Seidel

We prove that the asymptotics of the Fredholm determinant of $I-K_\alpha$, where $K_\alpha$ is the integral operator with the sine kernel $\sin(x-y)/(x-y)/\pi$ on the interval $[0,\alpha]$ is given by a formula which was conjectured by F.J.…

Functional Analysis · Mathematics 2007-05-23 Torsten Ehrhardt

A practical criterion for the irreducibility (with respect to integration by part identities) of a particular Feynman integral to a given set of integrals is presented. The irreducibility is shown to be related to the existence of stable…

High Energy Physics - Phenomenology · Physics 2009-11-11 P. A. Baikov

Suppose $\alpha$ is an orientation preserving diffeomorphism (shift) of $\mR_+=(0,\infty)$ onto itself with the only fixed points $0$ and $\infty$. We establish sufficient conditions for the Fredholmness of the singular integral operator \[…

Functional Analysis · Mathematics 2010-09-29 Alexei Yu. Karlovich , Yuri I. Karlovich , Amarino B. Lebre

The purpose of this paper is to obtain microlocal analogues of results by L. H \"ormander about inclusion relations between the ranges of first order differential operators with coefficients in $C^\infty$ which fail to be locally solvable.…

Analysis of PDEs · Mathematics 2015-02-13 Jens Wittsten

In this paper we show that quasisimilar $n$-tuples of tensor products of $m$-isometric operators have the same spectra, essential spectra and indices. The properties of single Fredholm operators possess \cite{4} is related to an important…

Functional Analysis · Mathematics 2025-10-13 Salah Mecheri

We provide a thorough construction of a system of compatible determinant line bundles over spaces of Fredholm operators, fully verify that this system satisfies a number of important properties, and include explicit formulas for all…

Differential Geometry · Mathematics 2022-05-31 Aleksey Zinger

This paper establishes a Freidlin-Wentzell large deviation principle for stochastic differential equations(SDEs) under locally weak monotonicity conditions and Lyapunov conditions. We illustrate the main result of the paper by showing that…

Probability · Mathematics 2021-10-14 Jian Wang , Hao Yang , Jianliang Zhai , Tusheng Zhang