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On compact Riemannian manifolds with a large isometry group we investigate the invariant spectrum of the ordinary Laplacian. For either a toric Kaehler metric, or a rotationally-symmetric metric on the sphere, we produce upper bounds for…

Differential Geometry · Mathematics 2020-03-31 Stuart James Hall , Thomas Murphy

We consider analytic maps and vector fields defined in $\mathbb{R}^2 \times \mathbb{T}^d$, having a $d$-dimensional invariant torus $\mathcal{T}$. The map (resp. vector field) restricted to $\mathcal{T}$ defines a rotation of frequency…

Dynamical Systems · Mathematics 2023-10-10 Clara Cufí-Cabré , Ernest Fontich

We define an invariant of graphs embedded in a three-manifold and a partition function for 2-complexes embedded in a triangulated four-manifold by specifying the values of variables in the Turaev-Viro and Crane-Yetter state sum models. In…

Quantum Algebra · Mathematics 2008-11-26 John W. Barrett , J. Manuel Garcia-Islas , Joao Faria Martins

From a path integral point of view (e.g. \cite{Q98}) physicists have shown how {\it duality} in antisymmetric quantum field theories on a closed space-time manifold $M$ relies in a fundamental way on Fourier Transformations of formal…

High Energy Physics - Theory · Physics 2017-08-23 Alexander Cardona

In analogy with the Thurston norm, we define for an orientable 3-manifold $M$ a numerical function on $H_2(M;Q/Z)$. This function measures the minimal complexity of folded surfaces representing a given homology class. A similar function is…

Geometric Topology · Mathematics 2014-10-01 Vladimir Turaev

We give a differentially closed description of the uniformizing representation to the analytical apparatus on Riemann surfaces and orbifolds of finite analytic type. Apart from well-known automorphic functions and Abelian differentials it…

Classical Analysis and ODEs · Mathematics 2015-09-14 Yurii V. Brezhnev

In this paper we define a Poincar\'e-Reidemeister scalar product on the determinant line of the cohomology of any flat vector bundle over a closed orientable odd-dimensional manifold. It is a combinatorial "torsion-type" invariant which…

Differential Geometry · Mathematics 2007-05-23 Michael Farber , Vladimir Turaev

For a Morse function on a closed orientable Riemannian manifold one introduces the {\it virtually small spectral package} an analytic object consisting of a finite number of analytic quantities derived from the pair, {\it Riemannian metric,…

Differential Geometry · Mathematics 2020-05-12 Dan Burghelea , Yoonweon Lee

(This is a report for the Proceedings of ``Journees Relativistes 1993'' written in September 1993. Containes a short description of the results published elsewhere in the joint paper with A. Ashtekar) Integral calculus on the space of gauge…

General Relativity and Quantum Cosmology · Physics 2011-04-15 Jerzy Lewandowski

The second fundamental form of Riemannian geometry is generalised to the case of a manifold with a linear connection and an integrable distribution. This bilinear form is generally not symmetric and its skew part is the torsion. The form…

Differential Geometry · Mathematics 2023-07-20 G. E. Prince

We use higher parallel transport -- more precisely, the integration A_{infty}-functor constructed by Block-Smith and Arias Abad-Schaetz -- to define Reidemeister torsion for flat superconnections. We hope that the combinatorial Reidemeister…

Differential Geometry · Mathematics 2011-08-26 Camilo Arias Abad , Florian Schaetz

Using different forms of the arithmetic Riemann-Roch theorem and the computations of Bott-Chern secondary classes, we compute the analytic torsion and the height of Hirzebruch surfaces.

Differential Geometry · Mathematics 2009-07-02 Christophe Mourougane

We study differential operators, whose coefficients define noncommutative algebras. As algebra of coefficients, we consider crossed products, corresponding to action of a discrete group on a smooth manifold. We give index formulas for…

Operator Algebras · Mathematics 2011-06-22 A. Yu. Savin , B. Yu. Sternin

Taylor expansions of analytic functions are considered with respect to two points. Cauchy-type formulas are given for coefficients and remainders in the expansions, and the regions of convergence are indicated. It is explained how these…

Classical Analysis and ODEs · Mathematics 2007-05-23 Jose L. Lopez , Nico M. Temme

In this paper it is shown that for locally trivial complex analytic morphisms between some reduced spaces the Relative Riemann-Hilbert Theorem still holds up to torsion, i.e. tame flat relative connections on torsion-free sheaves are in…

Complex Variables · Mathematics 2026-04-10 Thomas Kurbach

We prove an index theorem concerning the pushforward of flat B-vector bundles, where B is an appropriate algebra. We construct the associated analytic torsion form T. If Z is a smooth closed aspherical manifold, we show that T gives…

dg-ga · Mathematics 2008-02-03 John Lott

The well known formulas express the curvature and the torsion of a curve in $R^3$ in terms of euclidean invariants of its derivatives. We obtain expressions of this kind for all curvatures of curves in $R^n$. It follows that a curve in…

Differential Geometry · Mathematics 2012-12-03 Eugene Gutkin

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

Let $M$ be a $3$-manifold with connected non-vacuos boundary which is not spherical. Assume that $N$ is another $3$-manifold with vacuous boundary and $N^{\ast}$ is the $3$-manifold obtained by removing from $N$ the interior of a $3$-cell.…

Geometric Topology · Mathematics 2024-08-22 Esma Dirican Erdal

On a smooth manifold with distributions ${\cal D}_1$ and ${\cal D}_2$ having trivial intersection, we consider the integral of their mutual curvature, as a functional of Riemannian metrics that make the distributions orthogonal. The mutual…

Differential Geometry · Mathematics 2023-03-07 Vladimir Rovenski , Tomasz Zawadzki