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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.

169,341 papers · 148 categories

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48 results for symmetric cosimplicial objects

This paper explores differential and sector forms in tangent categories, finding rich structures and connections.

problem Understanding differential and sector forms in tangent categories.
method Investigates differential and sector forms in tangent categories, developing new equational presentations and structures.
result Sector forms in tangent categories form a symmetric cosimplicial object, with a subcomplex isomorphic to the de Rham complex of differential forms.

Goodwillie's model connects knot spaces to cosimplicial spaces, aiding in knot homotopy computation.

problem Computing the homotopy spectral sequence of the space of long knots.
method Using cosimplicial spaces and Goodwillie's correspondence, computing the first page of the spectral sequence.
result A combinatorial interpretation of differentials in the spectral sequence, via marked graphs.

We study the spaces of string links and homotopy string links in an arbitrary manifold using multivariable manifold calculus of functors. We construct multi-cosimplicial models for both spaces and deduce certain convergence properties of the associated Bousfield-Kan homotopy and cohomology spectral sequences when the a…

2009-06-15abs ↗pdf ↗

Solves differentiation for Lie ∞-groups using formal groupoids.

problem Differentiation of Lie ∞-groups.
method Develops homotopy theory of formal ∞-groupoids and analyzes Dold-Kan adjunction for cosimplicial algebras.
result Differentiation functor from finite-dimensional Lie ∞-groups to finite-type Lie ∞-algebras is homotopically well-behaved.

Let MM be a closed, oriented manifold of dimension dd. Let LMLM be the space of smooth loops in MM. Chas and Sullivan recently defined a product on the homology H(LM)H_*(LM) of degree d-d. They then investigated other structure that this product induces, including a Batalin -Vilkovisky structure, and a Lie algebra str…

2001-07-25abs ↗pdf ↗

We find a one-to-one correspondence between full extrinsic symmetric spaces in (possibly degenerate) inner product spaces and certain algebraic objects called (weak) extrinsic symmetric triples. In particular, this yields a description of arbitrary extrinsic symmetric spaces in pseudo-Euclidean spaces by corresponding …

2008-09-26abs ↗pdf ↗

A modular object in a symmetric monoidal bicategory is a Frobenius algebra object whose product and coproduct are biadjoint, equipped with a braided structure and a compatible twist, satisfying rigidity, ribbon, pivotality, and modularity conditions. We prove that the oriented 3-dimensional bordism bicategory of 1-, 2-…

2014-11-04abs ↗pdf ↗

Having developed a description of indefinite extrinsic symmetric spaces by corresponding infinitesimal objects in the preceding paper we now study the classification problem for these algebraic objects. In most cases the transvection group of an indefinite extrinsic symmetric space is not semisimple, which makes the cl…

2010-04-11abs ↗pdf ↗

We present new definitions for and give a comprehensive treatment of the canonical compactification of configuration spaces due to Fulton-MacPherson and Axelrod-Singer in the setting of smooth manifolds, as well as a simplicial variant of this compactification initiated by Kontsevich. Our constructions are elementary a…

2003-06-26abs ↗pdf ↗

We introduce SARR for symmetric object pose estimation, improving CNN performance.

problem Ambiguities in symmetric object orientations hinder deep learning pose estimation.
method Numeric rotation representation using symmetry-derived trigonometric identities.
result SARR enables standard CNNs to achieve state-of-the-art performance.

Improved convergence speed of principal component analysis through modified learning rules.

problem Slow convergence for covariance matrices with close eigenvalues.
method Introduced an additional term to the objective function to mitigate convergence issues.
result Significantly improved convergence speed confirmed through simulations.

The paper characterizes spherically symmetric metrics with scalar curvature.

problem Characterizing spherically symmetric metrics with scalar curvature.
method Established a curvature compatibility condition on spherically symmetric Finsler metrics and constructed a Berwald frame.
result Characterized spherically symmetric metrics with scalar curvature.

We show that the map on components from the space of classical long knots to the n-th stage of its Goodwillie-Weiss embedding calculus tower is a map of monoids whose target is an abelian group and which is invariant under clasper surgery. We deduce that this map on components is a finite type-(n-1) knot invariant. We …

2014-11-07abs ↗pdf ↗

We study curvature-adapted submanifolds of general symmetric spaces. We generalize Cartan's theorem for isoparametric hypersurfaces of spheres and Wang's classification of isoparametric Hopf hypersurfaces in complex projective spaces to any compact symmetric space. Our second objective is to investigate such hypersurfa…

2011-02-23abs ↗pdf ↗

Study invariant submanifolds in (LCS)n-manifolds with quarter symmetric metric connection.

problem Characterize invariant submanifolds in (LCS)n-manifolds.
method Investigate invariant submanifolds with respect to quarter symmetric metric connection.
result Mean curvature of invariant submanifold is equal to the mean curvature with Levi-Civita connection.

Riemannian symmetric spaces are fundamental objects in finite dimensional differential geometry. An important problem is the construction of symmetric spaces for generalizations of simple Lie groups, especially their closest infinite dimensional analogues known as Kac-Moody groups. We solve this problem and construct a…

2013-05-14abs ↗pdf ↗

New exact spherically symmetric vacuum solutions found in Finsler gravity.

problem Finding exact vacuum solutions in Finsler gravity.
method Spherically symmetric, asymptotically flat Berwald spacetimes solved for Finsler gravity vacuum equation.
result Only one class of spherically symmetric Berwald spacetimes is compatible with asymptotic flatness and a well-defined causal structure.

Study ηη-Ricci solitons on Kenmotsu manifolds with generalized symmetric metric connection.

problem Exploring ηη-Ricci solitons on Kenmotsu manifolds with a specific type of metric connection.
method Examined Ricci and ηη-Ricci solitons on Kenmotsu manifolds with generalized symmetric metric connection of type (α,β)(α,β) under various conditions.
result Constructed an example of a Kenmotsu manifold with generalized symmetric metric connection of type (α,β)(α,β) admitting ηη-Ricci solitons.

New (co)homology theory for symmetric quandles developed.

problem Developing strong invariants for symmetric quandles.
method Introducing symmetric quandle modules and Beck modules, extending module theory, and constructing generalized (co)homology.
result Established an explicit isomorphism between symmetric quandle cohomology and group cohomology.

Study characterizes totally geodesic submanifolds in quotient spaces.

problem Characterizing totally geodesic submanifolds in quotient spaces.
method Characterization through totally geodesic submanifolds and holomorphic tangent sequence splitting.
result Characterization of totally geodesic submanifolds in quotient spaces.

A new approach to Morse theory using folded ribbon trees.

problem Applying Morse theory on symmetric products of surfaces.
method Introducing an A-infinity category with objects as κ-tuples of Morse functions, and showing conditions for the endomorphism to be a Hecke algebra.
result The endomorphism of a specific type of κ-tuple of Morse functions on T*R^2 is the Hecke algebra associated to the symmetric group.

We introduce the category of generalized Courant algebroids and show that it admits a free object on any anchored vector bundle. The free Courant algebroid is built from two components: the generalized Courant algebroid associated to a symmetric Leibniz algebroid and the free symmetric Leibniz algebroid on an anchored …

2014-07-28abs ↗pdf ↗

The paper studies posets from decompositions in symmetric monoidal categories.

problem Understanding posets from decompositions in symmetric monoidal categories.
method Defining decompositions and partial decompositions, complexes of frames, partial bases, and ordered versions.
result Unified approach to combinatorics and homotopy type of posets and complexes.

Capsule networks can only represent symmetric functions due to routing limitations.

problem Capsule networks' expressivity is limited to symmetric functions.
method Proved and empirically demonstrated that EM-routing and routing-by-agreement prevent capsule networks from distinguishing inputs and their negative counterpart.
result Capsule networks are not universal approximators due to the limitation of expressivity.

Let YY be a CW-complex with a single 0-cell, let KK be its Kan group, a free simplicial group whose realization is a model for the space ΩYΩY of based loops on YY, and let GG be a Lie group, not necessarily connected. By means of simplicial techniques involving fundamental results of {\smc Kan's} and the standard $…

1995-05-23abs ↗pdf ↗

Paper tackles multiplayer symmetric games, securing equal share for n players.

problem Multiplayer games lack unique equilibria, making guarantees unreliable.
method Identifies conditions for equal share, designs efficient algorithms inspired by no-regret learning.
result Proves algorithms achieve approximate equal share across various settings.

Spectral clustering is a standard approach to label nodes on a graph by studying the (largest or lowest) eigenvalues of a symmetric real matrix such as e.g. the adjacency or the Laplacian. Recently, it has been argued that using instead a more complicated, non-symmetric and higher dimensional operator, related to the n…

2014-06-07abs ↗pdf ↗

In this paper we study maps (curved flats) into symmetric spaces which are tangent at each point to a flat of the symmetric space. Important examples of such maps arise from isometric immersions of space forms into space forms via their Gauss maps. Further examples are found in conformal geometry, e.g. the curved flats…

1995-07-08abs ↗pdf ↗

Unified approach for neural networks with multi-compartmental neurons and non-Hebbian plasticity.

problem Limited computational power of existing neural network models for multi-compartmental neurons and non-Hebbian plasticity.
method Unified extension of similarity matching approach to derive neural networks with multi-compartmental neurons and local, non-Hebbian learning rules.
result Unified approach facilitates understanding of multi-compartmental neuronal structures and non-Hebbian plasticity.

In the literature, there are two different notions of pseudosymmetric manifolds, one by Chaki [7] and other by Deszcz [16], and there are many papers related to these notions. The object of the present paper is to deduce necessary and sufficient conditions for a Chaki pseudosymmetric [7] (resp. pseudo Ricci symmetric […

2014-05-09abs ↗pdf ↗

Let YY be a CW-complex with a single 0-cell, KK its Kan group, a model for the loop space of YY, and let GG be a compact, connected Lie group. We give an explicit finite dimensional construction of generators of the equivariant cohomology of the geometric realization of the cosimplicial manifold $\roman{Hom}(K,G)$

1995-06-14abs ↗pdf ↗

Efficient diffusion model for symmetric manifolds reduces training and computation costs.

problem Heat kernel computations for manifold diffusion models are computationally expensive and infeasible.
method Spatially-varying covariance diffusion model, efficient objective derived via Ito's Lemma.
result Our model reduces training time and arithmetic operations by orders of magnitude.

This thesis constructs families of arcs in 4-manifolds and analyzes their homotopy properties.

problem Analyzing the homotopy properties of families of embedded arcs in 4-manifolds.
method Using embedding calculus and diagrammatic frameworks inspired by cubical ω-groupoids, the thesis constructs and analyzes families of embedded arcs.
result The family G(p,q,r)G(p,q,r) is trivial in π3T3Emb(I,M)π_3T_3\mathsf{Emb}_\partial(I,M) but conjectured to be non-trivial in π3T4Emb(I,M)π_3T_4\mathsf{Emb}_\partial(I,M).

Formula establishes determinant majorization for symmetric matrices.

problem Determining determinant majorization for symmetric matrices.
method Establishes determinant majorization formula for symmetric matrices using invariant Garding-Dirichlet polynomials.
result Formula F(A)1Ndet(A)1nF(A)^{1\over N} \geq \det(A)^{1\over n} for symmetric matrices.