activity
20042024
most citedR-boundedness, pseudodifferential operators, and maximal regularity for some classes of partial differential operators

3 citations · 14 across the 22 of their papers we have counts for

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19 papers · 1 filter

math.AP2024

A Shubin pseudodifferential calculus on asymptotically conic manifolds

Thomas Krainer

We present a global pseudodifferential calculus on asymptotically conic manifolds that generalizes (anisotropic versions of) Shubin's classical global pseudodifferential calculus o…

math.AP2022

Cobordism invariance of the index for realizations of elliptic operators revisited

Thomas Krainer

We revisit an argument due to Lesch (Topology 32 (1993), no. 3, 611-623) for proving the cobordism invariance of the index of Dirac operators on even-dimensional closed manifolds a…

math.AP2021

Extensions of symmetric operators that are invariant under scaling and applications to indicial operators

Thomas Krainer

Indicial operators are model operators associated to an elliptic differential operator near a corner singularity on a stratified manifold. These model operators are defined on gene…

math.AP2016

Elliptic complexes of first-order cone operators: ideal boundary conditions

Thomas Krainer, Gerardo A. Mendoza

The purpose of this paper is to provide a detailed description of the spaces that can be specified as domains for the operators of a first order elliptic complex on a compact…

math.AP2015

The Friedrichs extension for elliptic wedge operators of second order

Thomas Krainer, Gerardo A. Mendoza

The paper provides an explicit description of the structure of the domain of the Friedrichs extension of a second order semibounded elliptic wedge operator, initially defined on sm…

math.AP2014★ 1 cited

Boundary value problems for elliptic wedge operators: the first order case

Thomas Krainer, Gerardo A. Mendoza

This note is a description of some of the results obtained by the authors in connection with the problem in the title. These, discussed following a summary of background material c…

math.AP2014

A calculus of abstract edge pseudodifferential operators of type

Thomas Krainer

In this paper we expand on B.-W. Schulze's abstract edge pseudodifferential calculus and introduce a larger class of operators that is modeled on Hörmander's calculus,…

math.AP2013★ 2 cited

Boundary value problems for first order elliptic wedge operators

Thomas Krainer, Gerardo A. Mendoza

We develop an elliptic theory based in of boundary value problems for general wedge differential operators of first order under only mild assumptions on the boundary spectrum…

math.AP2013★ 1 cited

The kernel bundle of a holomorphic Fredholm family

Thomas Krainer, Gerardo A. Mendoza

Let $\Y$ be a smooth connected manifold, $Σ\subset\C$ an open set and $(σ,y)\to\scrP_y(σ)$ a family of unbounded Fredholm operators of index 0 depending smoot…

math.AP2013

Elliptic systems of variable order

Thomas Krainer, Gerardo A. Mendoza

The general theory of boundary value problems for linear elliptic wedge operators (on smooth manifolds with boundary) leads naturally, even in the scalar case, to the need to consi…

math.AP2010

On the closure of elliptic wedge operators

Juan B. Gil, Thomas Krainer, Gerardo A. Mendoza

We prove a semi-Fredholm theorem for the minimal extension of elliptic operators on manifolds with wedge singularities and give, under suitable assumptions, a full asymptotic expan…

math.AP2009

Dynamics on Grassmannians and resolvents of cone operators

Juan Gil, Thomas Krainer, Gerardo Mendoza

The paper proves the existence and elucidates the structure of the asymptotic expansion of the trace of the resolvent of a closed extension of a general elliptic cone operator on a…

math.AP2008

Maximal regularity for parabolic partial differential equations on manifolds with cylindrical ends

Thomas Krainer

We give a short, simple proof of maximal regularity for linear parabolic evolution equations on manifolds with cylindrical ends by making use of pseudodifferential parametrices and…

math.AP2007

A conic manifold perspective of elliptic operators on graphs

Juan B. Gil, Thomas Krainer, Gerardo A. Mendoza

We give a simple, explicit, sufficient condition for the existence of a sector of minimal growth for second order regular singular differential operators on graphs. We specifically…

math.AP2006★ 3 cited

R-boundedness, pseudodifferential operators, and maximal regularity for some classes of partial differential operators

Robert Denk, Thomas Krainer

It is shown that an elliptic scattering operator on a compact manifold with boundary with coefficients in the bounded operators of a bundle of Banach spaces of class (HT) and P…

math.AP2005

Elliptic boundary problems on manifolds with polycylindrical ends

Thomas Krainer

We investigate general Shapiro-Lopatinsky elliptic boundary value problems on manifolds with polycylindrical ends. This is accomplished by compactifying such a manifold to a manifo…

math.AP2005★ 3 cited

Resolvents of elliptic boundary problems on conic manifolds

Thomas Krainer

This paper is a continuation of the investigation of resolvents of elliptic operators on conic manifolds from math.AP/0410178 and math.AP/0410176 to the case of manifolds with boun…

math.AP2004★ 2 cited

Resolvents of elliptic cone operators

Juan B. Gil, Thomas Krainer, Gerardo A. Mendoza

We prove the existence of sectors of minimal growth for general closed extensions of elliptic cone operators under natural ellipticity conditions. This is achieved by the construct…

math.AP2004★ 2 cited

Geometry and spectra of closed extensions of elliptic cone operators

Juan B. Gil, Thomas Krainer, Gerardo A. Mendoza

We study the geometry of the set of closed extensions of index 0 of an elliptic cone operator and its model operator in connection with the spectra of the extensions, and give a ne…