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We prove a formula for the intersection R-torsion of a finite cone and use it to introduce a family of spectral invariants which is closely related to Cheeger's half torsion.

Differential Geometry · Mathematics 2014-10-24 Xianzhe Dai , Xiaoling Huang

We give an explicit formula for the $L^2$ analytic torsion of the finite metric cone over an oriented compact connected Riemannian manifold. We provide an interpretation of the different factors appearing in this formula. We prove that the…

Differential Geometry · Mathematics 2015-07-14 L. Hartmann , M. Spreafico

We prove the equality of the $L^2$-analytic torsion and the intersection R torsion of the even dimensional finite metric cone over an odd dimensional compact manifold.

Differential Geometry · Mathematics 2014-10-03 Luiz Hartmann , Mauro Spreafico

We compute the analytic torsion of a cone over a sphere of dimension 1, 2, and 3, and we conjecture a general formula for the cone over an odd dimensional sphere.

Differential Geometry · Mathematics 2012-10-12 L. Hartmann , M. Spreafico

The formula for analytic torsion of a cone in even dimensions is comprised of three terms. The first two terms are well understood and given by an algebraic combination of the Betti numbers and the analytic torsion of the cone base. The…

Spectral Theory · Mathematics 2015-02-02 Boris Vertman

This article starts with the mathematical definition, concrete description, and physical meaning of Cartan's torsion. I proceed with the argumentation that torsion is required for the description of intrinsic spin. Moreover I argue that the…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Rainer W. Kuhne

We give an explicit construction of a closed curve with constant torsion and everywhere positive curvature. We also discuss the restrictions on closed curves of constant torsion when they are constrained to lie on convex surfaces.

Differential Geometry · Mathematics 2012-07-02 Larr M. Bates , O. Michael Melko

A Fourier restriction estimate is obtained for a broad class of conic surfaces by adding a weight to the usual underlying measure. The new restriction estimate exhibits a certain affine-invariance and implies the sharp $L^p-L^q$ restriction…

Classical Analysis and ODEs · Mathematics 2019-02-20 Jonathan Hickman

In this paper we study the analytic torsion of an odd-dimensional manifold with isolated conical singularities. First we show that the analytic torsion is invariant under deformations of the metric which are of higher order near the…

Spectral Theory · Mathematics 2015-02-02 Werner Mueller , Boris Vertman

By a classical result of Roitman, a complete intersection $X$ of sufficiently small degree admits a rational decomposition of the diagonal. This means that some multiple of the diagonal by a positive integer $N$, when viewed as a cycle in…

Algebraic Geometry · Mathematics 2018-03-16 Andre Chatzistamatiou , Marc Levine

I reproduce, in the case of a conical geometry, the torque anomaly recently noted by Fulling, Mera and Trendafilova for the wedge. The expected conservation equation is obtained by a variational method and a mathematical cancellation of the…

High Energy Physics - Theory · Physics 2013-02-07 J. S. Dowker

We provide new logarithmic lower bounds for the torsion order of a very general complete intersection in projective space as well as a very general hypersurface in products of projective spaces and Grassmannians, in particular we prove…

Algebraic Geometry · Mathematics 2025-10-29 Jan Lange , Guoyun Zhang

For polyhedral convex cones in ${\mathbb R}^d$, we give a proof for the conic kinematic formula for conic curvature measures, which avoids the use of characterization theorems. For the random cones defined as typical cones of an isotropic…

Metric Geometry · Mathematics 2017-06-13 Rolf Schneider

We study the deformation of spherical conical metrics with at least some of the cone angles larger than $2\pi$. We show in this note via synthetic geometry that for one family of such metrics, there is local rigidity in the choice of cone…

Differential Geometry · Mathematics 2020-09-02 Xuwen Zhu

We study the renormalized analytic torsion of complete manifolds with fibred boundary metrics, also referred to as $\phi$-metrics. We establish invariance of the torsion under suitable deformations of the metric, and establish a gluing…

Differential Geometry · Mathematics 2025-08-25 Jørgen Olsen Lye , Boris Vertman

The application of pure torsion to a long and thin cylindrical rod is known to provoke a twisting instability, evolving from an initial kink to a knot. In the torsional parallel-plate rheometry of stubby cylinders, the geometrical…

Soft Condensed Matter · Physics 2020-09-22 Pasquale Ciarletta , Michel Destrade

In this note, we use the intersection number to determine explicitly the balanced cone of the small resolution of the quintic conifold.

Algebraic Geometry · Mathematics 2024-10-02 Jixiang Fu , Hongjie Wang

In this paper we have studied the notion of rough convergence of sequences in a partial metric space. We have also investigated how far several relevant results on boundedness, rough limit sets etc. which are valid in a metric space are…

General Topology · Mathematics 2022-11-08 Amar Kumar Banerjee , Sukila Khatun

In this paper we consider a partial overdetermined mixed boundary value problem in domains inside a cone as in [18]. We show that in cones having an isoperimetric property the only domains which admit a solution and which minimize a…

Analysis of PDEs · Mathematics 2019-05-27 Filomena Pacella , Giulio Tralli

We study the analytic torsion of the cone over an orientable odd dimensional compact connected Riemannian manifold W. We prove that the logarithm of the analytic torsion of the cone decomposes as the sum of the logarithm of the root of the…

Differential Geometry · Mathematics 2012-10-12 L. Hartmann , M. Spreafico
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