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In this survey, we describe the fundamental differential-geometric structures of information manifolds, state the fundamental theorem of information geometry, and illustrate some use cases of these information manifolds in information…

Machine Learning · Computer Science 2020-10-01 Frank Nielsen

These lecture notes provide an introduction to logarithmic geometry with a view towards recent applications in the desingularization theory.

Algebraic Geometry · Mathematics 2022-09-27 Michael Temkin

Along the lines of the classic Hodge-De Rham theory a general decomposition theorem for sections of a Dirac bundle over a compact Riemannian manifold is proved by extending concepts as exterior derivative and coderivative as well as as…

Differential Geometry · Mathematics 2020-08-13 Simone Farinelli

We establish an index theorem for Toeplitz operators on odd dimensional spin manifolds with boundary. It may be thought of as an odd dimensional analogue of the Atiyah-Patodi-Singer index theorem for Dirac operators on manifolds with…

Differential Geometry · Mathematics 2007-05-23 Xianzhe Dai , Weiping Zhang

Generalizing differential geometry of smooth vector bundles formulated in algebraic terms of the ring of smooth functions, its derivations and the Koszul connection, one can define differential operators, differential calculus and…

Mathematical Physics · Physics 2009-10-28 G. Sardanashvily

We develop a new framework for the study of generalized Killing spinors, where generalized Killing spinor equations, possibly with constraints, can be formulated equivalently as systems of partial differential equations for a polyform…

Differential Geometry · Mathematics 2022-02-15 Vicente Cortés , Calin Lazaroiu , C. S. Shahbazi

Under two boundary conditions, the generalized Atiyah-Patodi-Singer boundary condition and the modified generalized -Atiyah-Patodi-Singer boundary condition, we get the lower bounds for the eigenvalues of the fundamental Dirac operator on…

Differential Geometry · Mathematics 2009-11-13 Daguang Chen

We compute the index of a Callias-type operator with APS boundary condition on a manifold with compact boundary in terms of combination of indexes of induced operators on a compact hypersurface. Our result generalizes the classical…

Differential Geometry · Mathematics 2017-09-19 Pengshuai Shi

We develop a formalism involving Atiyah classes of sheaves on a smooth manifold, Hochschild chain and cochain complexes. As an application we prove a version of the Riemann--Roch theorem.

Algebraic Geometry · Mathematics 2014-02-26 Nikita Markarian

We give the generalized Atiyah-Schmid formula for projective tempered representations. Then we prove the Atiyah-Schmid formula for arithmetic subgroups of real reductive groups.

Representation Theory · Mathematics 2025-04-11 Jun Yang

In this paper, we consider the eigenvalue problem of Dirac operator on a compact Riemannian manifold isometrically immersed into Euclidean space and derive some extrinsic estimates for the sum of arbitrary consecutive $n$ eigenvalues of the…

Differential Geometry · Mathematics 2024-02-23 Lingzhong Zeng

In the present text we discuss basic aspects of the Seiberg - Witten theory mainly focusing the attantion on some geometrical details which could make the introduction to the subject more illustrative. At the same time we list there natural…

Differential Geometry · Mathematics 2007-05-23 Nik. Tyurin

An equality between the spectral flow of a family $A$ of self-adjoint Fredholm operators and the index of the associated differential operator $\frac{d}{dt}-iA$ with Atiyah-Patodi-Singer-style boundary conditions is shown. This generalizes…

Spectral Theory · Mathematics 2023-03-16 Lennart Ronge

These notes are based on lecture courses I gave to third year mathematics students at Cambridge. They could form a basis of an elementary one--term lecture course on integrable systems covering the Arnold-Liouville theorem, inverse…

High Energy Physics - Theory · Physics 2026-01-13 Maciej Dunajski

This article is based on author's talk at the International Conference "Alexandroff Reading", Moscow 21 - 25 May, 2012. The material presented in article is a programme intended to organise the ingredients of the index formula. The first…

K-Theory and Homology · Mathematics 2013-05-27 Nicolae Teleman

We study an example of an index problem for a Dirac-like operator subject to Atiyah-Patodi-Singer boundary conditions on a noncommutative manifold with boundary, namely the quantum unit disk.

Operator Algebras · Mathematics 2009-01-05 Alan L. Carey , Slawomir Klimek , Krzysztof P. Wojciechowski

We present a new supersymmetric index for three-dimensional ${\cal N}=2$ gauge theories defined on $\Sigma \times S^1$, where $\Sigma$ is a spindle, with twist or anti-twist for the $R$-symmetry background gauge field. We start examining…

High Energy Physics - Theory · Physics 2024-02-20 Matteo Inglese , Dario Martelli , Antonio Pittelli

Motivated by the work of Vishik on the analytic torsion we introduce a new class of generalized Atiyah-Patodi-Singer boundary value problems. We are able to derive a full heat expansion for this class of operators generalizing earlier work…

dg-ga · Mathematics 2008-02-03 Jochen Brüning , Matthias Lesch

We study a family of pseudodifferential operators (quantum Hamiltonians) on $L^{2}(\mathbb{R}^{n};\mathbb{C}^{d})$ whose spectrum exhibits two energy bands exchanging a finite number of eigenvalues. We show that this number coincides with…

Mathematical Physics · Physics 2025-10-30 Léon Monnier , Frédéric Faure

Let $M$ be a closed smooth connected spin manifold of even dimension $n$, let $g$ be a Riemannian metric of regularity $W^{1,p}$, $p > n$, on $M$ whose distributional scalar curvature in the sense of Lee-LeFloch is bounded below by…

Differential Geometry · Mathematics 2023-12-15 Simone Cecchini , Bernhard Hanke , Thomas Schick