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An index theory for projective families of elliptic pseudodifferential operators is developed. The topological and the analytic index of such a family both take values in twisted K-theory of the parametrizing space, X. The main result is…

Differential Geometry · Mathematics 2014-11-11 Varghese Mathai , Richard B Melrose , Isadore M Singer

We study differential operators on complete Riemannian manifolds which act on sections of a bundle of finite type modules over a von Neumann algebra with a trace. We prove a relative index and a Callias-type index theorems for von Neumann…

Differential Geometry · Mathematics 2016-02-23 Maxim Braverman , Simone Cecchini

Consider a classical elliptic pseudodifferential operator $P$ on ${\Bbb R}^n$ of order $2a$ ($0<a<1)$ with even symbol. For example, $P=A(x,D)^a$ where $A(x,D)$ is a second-order strongly elliptic differential operator; the fractional…

Analysis of PDEs · Mathematics 2016-04-25 Gerd Grubb

We derive extrinsic GJMS operators and $Q$-curvatures associated to a submanifold of a conformal manifold. The operators are conformally covariant scalar differential operators on the submanifold with leading part a power of the Laplacian…

Differential Geometry · Mathematics 2024-03-20 Jeffrey S. Case , C Robin Graham , Tzu-Mo Kuo

We study boundary value problems for some differential operators on Euclidean space and the Heisenberg group which are invariant under the conformal group of a Euclidean subspace resp. Heisenberg subgroup. These operators are shown to be…

Analysis of PDEs · Mathematics 2017-03-21 Jan Möllers , Bent Ørsted , Genkai Zhang

We consider one-dimensional inhomogeneous parabolic equations with higher-order elliptic differential operators subject to periodic boundary conditions. In our main result we show that the property of continuous maximal regularity is…

Analysis of PDEs · Mathematics 2012-09-19 Jeremy LeCrone

The purpose of this note is to extend the results of V. Guillemin on elliptic self-adjoint pseudodifferential operators of order one, from operators defined on smooth functions on a closed manifold to operators defined on smooth sections in…

dg-ga · Mathematics 2008-02-03 Bogdan Bucicovschi

This work is about global H\"older regularity for solutions to elliptic partial differential equations subject to mixed boundary conditions on irregular domains. There are two main results. In the first, we show that if the domain of the…

Analysis of PDEs · Mathematics 2022-10-10 Robert Haller , Hannes Meinlschmidt , Joachim Rehberg

Boutet de Monvel's calculus provides a pseudodifferential framework which encompasses the classical differential boundary value problems. In an extension of the concept of Lopatinski and Shapiro, it associates to each operator two symbols:…

K-Theory and Homology · Mathematics 2018-11-28 Severino Melo , Elmar Schrohe , Thomas Schick

We solve a problem posed by Calabi more than 60 years ago, known as the Saint-Venant compatibility problem: Given a compact Riemannian manifold, generally with boundary, find a compatibility operator for Lie derivatives of the metric…

Analysis of PDEs · Mathematics 2025-03-12 Raz Kupferman , Roee Leder

In this paper, we study eigenvalue of linear fourth order elliptic operators in divergence form with Dirichlet boundary condition on a bounded domain in a compact Riemannian manifolds with boundary (possibly empty) and find a general…

Differential Geometry · Mathematics 2019-02-01 Shahroud Azami

In this paper, we compute universal inequalities of eigenvalues of a large class of second-order elliptic differential operators in divergence form, that includes, e.g., the Laplace and Cheng-Yau operators, on a bounded domain in a complete…

Differential Geometry · Mathematics 2023-06-28 Cristiano S. Silva , Juliana F. R. Miranda , Marcio C. Araújo Filho

We study the spectral behavior of higher order elliptic operators upon domain perturbation. We prove general spectral stability results for Dirichlet, Neumann and intermediate boundary conditions. Moreover, we consider the case of the…

Analysis of PDEs · Mathematics 2018-05-15 José M. Arrieta , Pier Domenico Lamberti

We study strictly elliptic differential operators with Dirichlet boundary conditions on the space $\mathrm{C}(\overline{M})$ of continuous functions on a compact, Riemannian manifold $\overline{M}$ with boundary and prove sectoriality with…

Functional Analysis · Mathematics 2021-03-23 Tim Binz

We study the index problem for the d-bar operators subject to Atiyah- Patodi-Singer boundary conditions on noncommutative disk and annulus.

Operator Algebras · Mathematics 2015-05-18 Slawomir Klimek , Matthew McBride

We investigate a quantization problem which asks for the construction of an algebra for relative elliptic problems of pseudodifferential type associated to smooth embeddings. Specifically, we study the problem for embeddings in the category…

Differential Geometry · Mathematics 2017-10-09 Karsten Bohlen , René Schulz

In this paper we give a survey of elliptic theory for operators associated with diffeomorphisms of smooth manifolds. Such operators appear naturally in analysis, geometry and mathematical physics. We survey classical results as well as…

K-Theory and Homology · Mathematics 2015-11-06 Anton Savin , Boris Sternin

We investigate the evaluation of the Dirac index using symplectic geometry in the loop space of the corresponding supersymmetric quantum mechanical model. In particular, we find that if we impose a simple first class constraint, we can…

High Energy Physics - Theory · Physics 2009-10-22 A. Hietamaki , A. J. Niemi

In this first part of the paper, we define a natural dual object for manifolds with corners and show how pseudodifferential calculus on such manifolds can be constructed in terms of the localization principle in C*-algebras. In the second…

Operator Algebras · Mathematics 2007-05-23 V. E. Nazaikinskii , A. Yu. Savin , B. Yu. Sternin

The Atiyah-Bott Lefschetz Formula is a well-known formula for computing the equivariant index of an elliptic operator on a compact smooth manifold. We provide an analogue of this formula for the based loop group $\Omega SU(2)$ with respect…

Representation Theory · Mathematics 2020-10-05 Jack Ding
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