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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,742 papers · 148 categories

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48 results for Riemann-Finsler manifolds

Defines new invariants for Riemann-Finsler manifolds, generalizing Preissman's theorem.

problem Finding metrics with negative sectional curvature on compact products.
method Defining a Q\mathbb{Q}-valued deformation invariant and using it to generalize Preissman's theorem.
result First and mostly sharp generalizations of Preissman's theorem on non-existence of negative sectional curvature metrics.

Effective field theories with explicit Lorentz violation are intimately linked to Riemann-Finsler geometry. The quadratic single-fermion restriction of the Standard-Model Extension provides a rich source of pseudo-Riemann-Finsler spacetimes and Riemann-Finsler spaces. An example is presented that is constructed from a …

2011-04-28abs ↗pdf ↗

Study geodesics on infinite-dimensional manifolds using Finsler structures.

problem Geodesics on Fréchet manifolds of Riemannian metrics.
method Establish Riemann-Finsler structures, prove existence and minimality of geodesics, derive Euler-Lagrange equations.
result Geodesics on Fréchet manifolds of Riemannian metrics are length minimizing and satisfy Euler-Lagrange equations.

The correspondence between Riemann-Finsler geometries and effective field theories with spin-independent Lorentz violation is explored. We obtain the general quadratic action for effective scalar field theories in any spacetime dimension with Lorentz-violating operators of arbitrary mass dimension. Classical relativist…

2018-09-14abs ↗pdf ↗

Study invariants of elliptic curves in LCS manifolds, leading to new phenomena in Riemann-Finsler geometry.

problem Defining and studying invariants of elliptic curves in locally conformally symplectic manifolds.
method Using JJ-holomorphic curves and Gromov-Witten theory to define and study invariants.
result Found new phenomena in Riemann-Finsler geometry and an analogue of the Weinstein conjecture.

A geometric approach to differential game theory is illustrated. The parallel pursuit is considered as a two-player zero-sum differential game. The optimal strategies of each player is designed based on Riemann-Finsler geometry. Our approach incorporates a closed loop optimal control and the presentation is familiar wi…

2011-01-10abs ↗pdf ↗

Solves time-minimizing navigation on a mountain slope using Riemann-Finsler geometry.

problem Time-minimizing navigation on a mountain slope under gravity.
method Riemann-Finsler geometry, Zermelo navigation problem, anisotropic deformation of the background Riemannian metric, rescaled gravitational wind.
result A new Finsler metric for optimal navigation on slippery mountain slopes.

Study Riemann-Finsler geometry on tangent bundles of Lie groups with 2D commutator subgroup.

problem Characterize Riemannian and Finslerian properties of tangent bundles of Lie groups with specific commutator subgroups.
method Investigate sectional curvatures, define Randers metrics, and compute flag curvatures on tangent bundles.
result Explicit formulas for Riemannian curvature tensor on tangent bundles of Lie groups with 2D commutator subgroup.

We determine a 2-codimensional CR-structure on the slit tangent bundle T0MT_0M of a Finsler manifold (M,F)(M, F) by imposing a condition regarding the almost complex structure ΨΨ associated to FF when restricted to the structural distribution of a framed ff-structure. This condition is satisfied when (M,F)(M, F) is of scal…

2013-04-11abs ↗pdf ↗

We study the variational problem for NN-parallel curves on a Finslerian surface by means of Exterior Differential Systems using Griffiths' method. We obtain the conditions when these curves are extremals of a length functional and write the explicit form of Euler-Lagrange equations for this type of variational problem…

2014-07-21abs ↗pdf ↗

In this paper, I will show how to use beta-deformations to deal with dual flatness of Randers metrics. beta-deformations is a new method in Riemann-Finsler geometry, it is introduced by the author(see arxiv:1209.0845). Later on I will provide more applications of the new kind of deformations in Finsler geometry.

2012-09-06abs ↗pdf ↗

In this paper, I will show how to use ββ-deformations to deal with dual flatness of (α,β)(α,β)-metrics. It is a natural continuation of the research on dually flat Randers metrics(see arxiv:1209.1150). ββ-deformations is a new method in Riemann-Finsler geometry, it is introduced by the author(see arxiv:1209.0845).

2013-05-16abs ↗pdf ↗

The aim of this paper is to develop on the 1-jet space J^1(R,M^3) the Finsler-like geometry (in the sense of distinguished (d-) connection, d-torsions and d-curvatures) of the rheonomic Berwald-Moor metric of order three. Some natural geometrical field theories (gravitational and electromagnetic) produced by the preced…

2010-02-23abs ↗pdf ↗

We elaborate an unified geometric approach to classical mechanics, Riemann-Finsler spaces and gravity theories on Lie algebroids provided with nonlinear connection (N-connection) structure. There are investigated the conditions when the fundamental geometric objects like the anchor, metric and linear connection, almost…

2007-04-30abs ↗pdf ↗

The geometric constructions are elaborated on (semi) Riemannian manifolds and vector bundles provided with nonintegrable distributions defining nonlinear connection structures induced canonically by metric tensors. Such spaces are called nonholonomic manifolds and described by two equivalent linear connections also ind…

2007-04-16abs ↗pdf ↗

The work extends the A. Connes' noncommutative geometry to spaces with generic local anisotropy. We apply the E. Cartan's anholonomic frame approach to geometrical models and physical theories and develop the nonlinear connection formalism for projective module spaces. Examples of noncommutative generation of anholonom…

2002-05-16abs ↗pdf ↗

Study Ricci curvature of homogeneous Finsler spaces with specific metrics.

problem Curvature properties of homogeneous Finsler spaces with (α,β)(α, β)-metrics.
method Derived explicit formulae for Ricci curvature and found conditions for vanishing SS-curvature.
result Spaces with vanishing SS-curvature and negative Ricci curvature are Riemannian.

In 1972, K. Kenmotsu studied a class of almost contact Riemannian manifolds. Later, such a manifold was called a Kenmotsu manifold. This paper, we studied Kenmotsu manifolds with (2n+s)(2n+s)-dimensional ss-contact metric manifold and this manifold, we have called generalized Kenmotsu manifolds. Necessary and sufficient c…

2014-06-04abs ↗pdf ↗

Study on a new type of manifolds that generalize almost C-manifolds.

problem Understanding weak nearly C-manifolds and their properties.
method Analyzing conditions for local Riemannian product structures and characterizing specific dimensions.
result Conditions for a weak nearly C-manifold to become locally a Riemannian product and characterization of specific dimensions.

Stabilized convex symplectic manifolds are equivalent to flexible Weinstein manifolds.

problem Understanding the equivalence between stabilized convex symplectic manifolds and flexible Weinstein manifolds.
method Analyzing the homotopy type and symplectic properties of the manifolds.
result Stabilized convex symplectic manifolds are symplectomorphic to flexible Weinstein manifolds.

A selfsimiar manifold is a Riemannian manifold (M,g)\left(M,g\right) endowed with a homothetic vector field ξξ. We characterize global selfsimilar manifolds and describe the structure of local selfsimilar manifolds. We prove that any selfsimilar manifold with a potential homothetic vector field is a conical Riemannian ma…

2019-08-05abs ↗pdf ↗

The study provides a structure theorem for a new class of noncompact 3-manifolds.

problem Understanding a new class of noncompact 3-manifolds.
method Proved a structure theorem for irreducible open graph manifolds.
result A canonical 'reduced' decomposition of irreducible open graph manifolds along embedded, incompressible 2-tori.

The paper studies extended quasi-Einstein manifolds with special geometric properties and solitons.

problem Exploring new types of manifolds in general relativity.
method Generalization of existing manifolds and construction of specific examples.
result Existence and properties of extended quasi-Einstein manifolds with solitons.

Conditions for flat manifolds as cusp cross-sections in arithmetic hyperbolic manifolds.

problem Determining when a flat manifold can be a cusp cross-section in arithmetic hyperbolic manifolds.
method Analyzing rational representations of holonomy groups and quasi-arithmetic manifolds.
result Conditions for a flat manifold to appear as a cusp cross-section in every commensurability class of arithmetic hyperbolic manifolds.

Classifies 3-manifolds from simplified (2,0)-trisections of 4-manifolds.

problem Classifying 3-manifolds from simplified (2,0)-trisections of 4-manifolds.
method Classifies vertical 3-manifolds as preimages of arcs on the plane for simplified (2,0)-trisection maps.
result Each 6-tuple of vertical 3-manifolds determines the source 4-manifold uniquely up to orientation reversing diffeomorphisms.

Study on 3D manifolds with specific tensor structures and their properties.

problem Characterizing 3D Riemannian manifolds with tensor structures.
method Investigation of locally conformal Riemannian product manifolds and their associated structures.
result Conditions for additional structures to be parallel and properties of almost Einstein and Einstein manifolds.

New manifold type PNDP-manifold defined with Einstein warped product structure.

problem Defining manifolds with non-standard dimensions.
method Einstein warped product manifold with special base and fiber structures.
result PNDP-manifolds are Einstein warped product manifolds with specific base and fiber properties.

The paper explores F-manifolds and metrics, constructing canonical structures.

problem Understanding relationships between F-manifolds and metrics.
method Construction of canonical flat F-manifolds and homogeneous Riemannian F-manifolds.
result Construction of a canonical flat F-manifold associated to an arbitrary Riemannian F-manifold.

We introduce a new general class of metric f-manifolds which we call (nearly) trans-S-manifolds and includes S- manifolds, C-manifolds, s-th Sasakian manifolds and generalized Kenmotsu manifold studied previously. We prove their main properties and we present many examples which justify their study.

2016-12-21abs ↗pdf ↗

The study provides homological characterizations for QQ-manifolds and l2l_2-manifolds.

problem Density of maps in characterizing QQ-manifolds and l2l_2-manifolds.
method Investigates weakening the density of ZnZ_n-maps and ZZ-maps to homological maps.
result Obtains homological characterizations for QQ-manifolds and l2l_2-manifolds.