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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.

168,695 papers · 148 categories

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111221332442 · Jun 202019922001200920172026
48 results for higher property T

The paper explores higher property T in lattices and its connections to geometric phenomena.

problem Understanding higher property T in lattices and related geometric phenomena.
method Operator-algebraic characterizations of higher property T and connections to lattice geometry.
result Unified framework for understanding higher property T and related geometric phenomena.

Higher-dimensional Schwarzschild spacetimes violate the Penrose property.

problem Causal behavior of higher-dimensional Schwarzschild spacetimes.
method Analyzing causal properties in (2+1)(2+1), (3+1)(3+1), and (d+1)(d+1) dimensions.
result The Penrose property does not hold for (d+1)(d+1) dimensional Schwarzschild if d>3d>3.

This paper concerns some stability properties of higher dimensional catenoids in $\rr^{n+1}$ with n3n\ge 3. We prove that higher dimensional catenoids have index one. We use δδ-stablity for minimal hypersurfaces and show that the catenoid is 2n\frac 2n-stable and a complete 2n\frac 2n-stable minimal hypersurface is a …

2007-08-24abs ↗pdf ↗

A fundamental property of complex networks is the tendency for edges to cluster. The extent of the clustering is typically quantified by the clustering coefficient, which is the probability that a length-2 path is closed, i.e., induces a triangle in the network. However, higher-order cliques beyond triangles are crucia…

2017-04-12abs ↗pdf ↗

The higher spin Laplace operator has been constructed recently as the generalization of the Laplacian in higher spin theory. This acts on functions taking values in arbitrary irreducible representations of the Spin group. In this paper, we first provide a decomposition of the higher spin Laplace operator in terms of Rr…

2016-12-21abs ↗pdf ↗

This is the first of a series of two technical papers devoted to the analysis of holonomy invariants in strict higher gauge theory with end applications in higher Chern--Simons theory. For a flat 2--connection, we define the 2-holonomy of surface knots of arbitrary genus and determine its covariance properties under 1-…

2015-05-08abs ↗pdf ↗

This is the second of a series of two technical papers devoted to the analysis of holonomy invariants in strict higher gauge theory with end applications in higher Chern--Simons theory. We provide a definition of trace over a crossed module such to yield surface knot invariants upon application to 2-holonomies. We show…

2015-05-08abs ↗pdf ↗

Anosov representations give a higher-rank analogue of convex cocompactness in a rank-one Lie group which shares many of its good geometric and dynamical properties; geometric finiteness in rank one may be seen as a controlled weakening of convex cocompactness to allow for isolated failures of hyperbolicity. We introduc…

2019-12-31abs ↗pdf ↗

New spherical Milnor spaces for diffeological groups with geometric and topological properties.

problem Understanding higher topological structures in diffeological spaces.
method Spherical Milnor construction based on quadratic normalization.
result Provides a natural setting for studying principal bundles with Z2\mathbb{Z}_2-twists and higher cohomology.

We give a definition of higher dimensional iterated integrals based on integration over membranes. We prove basic properties of this definition and formulate a conjecture which extends Chen's de Rham Theorem for iterated integrals to the membrane case.

2012-03-16abs ↗pdf ↗

Let G be a Lie group with finitely many connected components and let K be a maximal compact subgroup. We assume that G satisfies the rapid decay (RD) property and that G/K has non-positive sectional curvature. As an example, we can take G to be a connected semisimple Lie group. Let M be a G-proper manifold with compact…

2018-01-20abs ↗pdf ↗

We construct a higher Whitehead torsion map, using algebraic K-theory of spaces, and show that it satisfies the usual properties of the classical Whitehead torsion. This is used to describe a "geometric assembly map" defined on stabilized structure spaces in purely homotopy theoretic terms.

2011-05-11abs ↗pdf ↗

Study on a weighted Suita conjecture for higher derivatives and their geometric properties.

problem Analyzing the Suita conjecture for higher derivatives with weights.
method Examining the set of points for equality in a weighted Suita conjecture and relating it to harmonic functions and Dirichlet problems.
result Relations between the set of points and integer-valued points of harmonic functions and Dirichlet problems for planar domains.

In this paper, the second of a series of two, we continue the study of higher index theory for expanders. We prove that if a sequence of graphs has girth tending to infinity, then the maximal coarse Baum-Connes assembly map is an isomorphism for the associated metric space XX. As discussed in the first paper in this s…

2010-12-19abs ↗pdf ↗

Higher-dimensional Ricci flows are shown to have unique and stable solutions.

problem Stability and uniqueness of Ricci flows in higher dimensions.
method Generalization of Bamler-Kleiner's proof to higher dimensions, use of Brendle's classification of κ-solutions, and maximum principle for linearized Ricci-DeTurck flow.
result Canonical evolution through singularities for manifolds with positive isotropic curvature.

The paper connects higher order risk measures and stochastic dominance, showing their equivalence and integrating them with optimization.

problem Comparing and characterizing random outcomes in risk assessment.
method Exploring the equivalence between higher order risk measures and stochastic dominance, using stochastic optimization and expectiles as examples.
result Higher order risk measures and stochastic dominance are equivalent and can be used to characterize random outcomes.

New method finds open subsets with trivial holonomy for certain geometries.

problem Finding open subsets with trivial holonomy for Cartan geometries.
method Analyzing the behavior of isotropies in model geometries to generalize properties of isolated higher-order fixed points.
result Existence of open subsets with trivial holonomy for Cartan geometries with certain isotropies.

We present a generalization of the Clifford action for other representations spaces of Spin(n)Spin(n), which is called the Clifford homomorphism. Their properties extend to the ones for the higher spin Dirac operators on spin manifolds. In particular, we have general Bochner identities for them, and an eigenvalue estimate o…

2000-07-10abs ↗pdf ↗

We prove that any action of a higher rank lattice on a Gromov-hyperbolic space is elementary. More precisely, it is either elliptic or parabolic. This is a large generalization of the fact that any action of a higher rank lattice on a tree has a fixed point. A consequence is that any quasi-action of a higher rank latti…

2016-07-07abs ↗pdf ↗

The article studies critical points of a new energy functional in higher dimensions.

problem Investigating critical points of a new energy functional in higher dimensions.
method Holomorphic deformations, closed and open properties, differential of the functional.
result Properties of critical points under holomorphic deformations are closed and open.

E. Gutkin found a remarkable class of convex billiard tables in the plane which have a constant angle invariant curve. In this paper we prove that in dimension 3 only round sphere has such a property. For dimension greater than 3 it must be either a sphere or to have a very special geometric properties. In 2-dimensiona…

2017-10-09abs ↗pdf ↗

The paper studies higher geometric structures and connections on manifolds, constructing moduli stacks and proving equivalence criteria.

problem Classifying and understanding higher geometric structures and connections on manifolds.
method Constructing smooth higher symmetry groups, moduli stacks, and higher gauge actions; proving equivalence criteria.
result Construction and classification of moduli stacks of higher geometric data and connections.

Constructs a new geometric structure on surfaces to generalize Teichmüller theory.

problem Exploring new geometric structures in Teichmüller theory.
method Uses the punctual Hilbert scheme of the plane to construct a higher complex structure and explores its properties.
result Establishes a canonical diffeomorphism between the moduli space of higher complex structures and Hitchin's component.

In this paper, we study κκ-noncollapsed ancient solutions to the Ricci flow with nonnegative curvature operator in higher dimensions. We impose one further assumption: one of the asymptotic shrinking gradient Ricci solitons is the standard cylinder Sn1×R\mathbb{S}^{n-1}\times\mathbb{R}. By making use of the properties of…

2018-12-10abs ↗pdf ↗

The paper studies curvature properties of sheaves of twisted holomorphic forms on families of compact Kähler manifolds.

problem Investigating curvature properties of sheaves of twisted holomorphic forms on families of compact Kähler manifolds.
method Derives a general curvature formula and explores special cases.
result Provides insight into geometric and analytical properties of curvature in various contexts.

Computes monopole Floer homology for three-manifolds.

problem Computing monopole Floer homology for three-manifolds.
method Develops a new framework to study homotopical properties of dga twisted with a specific kind of Maurer-Cartan element, and computes higher operations for the torus.
result Explicit computation of HM\overline{HM}_* for the torus.

We summarize our axioms for higher categories, and describe the blob complex. Fixing an n-category C, the blob complex associates a chain complex B_*(W;C)$ to any n-manifold W. The 0-th homology of this chain complex recovers the usual topological quantum field theory invariants of W. The higher homology groups should …

2011-08-26abs ↗pdf ↗

Superposition rules form a class of functions that describe general solutions of systems of first-order ordinary differential equations in terms of generic families of particular solutions and certain constants. In this work we extend this notion and other related ones to systems of higher-order differential equations …

2011-11-17abs ↗pdf ↗

A Delaunay decomposition is a cell decomposition in R^d for which each cell is inscribed in a Euclidean ball which is empty of all other vertices. This article introduces a generalization of the Delaunay decomposition in which the Euclidean balls in the empty ball condition are replaced by other families of regions bou…

2016-02-11abs ↗pdf ↗

We study primitive stable representations of free groups into higher rank semisimple Lie groups and their properties. Let ΣΣ be a compact, connected, orientable surface (possibly with boundary) of negative Euler characteristic. We first verify the σmodσ_{mod}-regularity for convex projective structures and positive repr…

2015-04-30abs ↗pdf ↗