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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.

169,341 papers · 148 categories

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75149224298 · Jun 202019922001200920182026
48 results for canonical object

The paper connects Riemann surface deformations with integrable Whitham hierarchies.

problem Understanding deformations of complex structures on Riemann surfaces.
method Variational formulas for holomorphic objects on Riemann surfaces, using canonical objects on the moduli space.
result The universal Whitham hierarchy is integrable by hydrodynamic reductions.

In this paper we study some geometrical objects (d-tensors, multi-time semisprays of polymomenta and nonlinear connections) on the dual 1-jet vector bundle J1(T,M)T×MJ^{1*}(\cal{T}, M)\to \cal{T}\times M. Some geometrical formulas, which connect the last two geometrical objects, are also derived. Finally, a canonical nonlinear…

2008-07-06abs ↗pdf ↗

The study characterizes Euclidean submanifolds with a conformal canonical vector field.

problem Characterizing Euclidean submanifolds with a specific vector field property.
method Investigating properties of the canonical vector field and its conformal nature.
result Characterization of Euclidean submanifolds with conformal canonical vector fields.

BLOCCS improves sparse CCA for better interpretation of multi-omics data.

problem Improving interpretation of multi-omics data.
method Block Sparse Canonical Correlation Analysis (BLOCCS) using a bi-convex objective and gradient descent.
result BLOCCS provides more interpretable solutions with improved orthogonality of sparse directions.

In this paper we provide a \emph{global} investigation of the geometry of parallelizable manifolds (or absolute parallelism geometry) frequently used for application. We discuss the different linear connections and curvature tensors from a global point of view. We give an existence and uniqueness theorem for a remarkab…

2012-09-06abs ↗pdf ↗

We explain how deformation theories of geometric objects such as complex structures, Poisson structures and holomorphic bundle structures lead to differential Gerstenhaber or Poisson algebras. We use homological perturbation theory to obtain AA_{\infty} algebra structures and some canonically defined deformations of s…

1999-06-14abs ↗pdf ↗

Study the relationship between canonical polynomials and elliptic sequences for elliptic singularities.

problem Understanding the relationship between canonical polynomials and elliptic sequences for elliptic singularities.
method An inductive setup of elliptic germs and comparison of their canonical polynomials.
result The exponents of the canonical polynomial determine the elliptic sequence and vice versa under certain conditions.

Paper proposes new metrics to quantify CCA estimation loss and characterizes minimax rates.

problem Estimating the loss of canonical correlation analysis (CCA) in learning low-dimensional representations.
method Proposes a new error metric based on excess prediction loss and views CCA as subspace estimation.
result Characterizes non-asymptotic minimax rates for CCA under proposed metrics.

Study smooth structures and stratifications on orbit spaces of Lie groupoids.

problem Understanding the smooth structure and stratification of orbit spaces of Lie groupoids.
method Utilizing Spallek's framework and extending classical theories of proper Lie group actions.
result Established Morita invariance of smooth structures and stratifications on orbispaces.

A refined form of the `Folk Theorem' that a smooth action by a compact Lie group can be (canonically) resolved, by iterated blow up, to have unique isotropy type was established by the authors in the context of manifolds with corners; the canonical construction induces fibrations on the boundary faces of the resolution…

2010-12-28abs ↗pdf ↗

The book develops a new bordism-theoretic approach to understanding orientations of moduli spaces.

problem Defining and proving orientations for moduli spaces of geometric objects.
method Develops bordism categories and uses them to encode and solve orientation problems.
result Proves orientability and constructs canonical orientations for various moduli spaces.

The paper shows objective derivatives are covariant derivatives on Riemannian metrics.

problem The definition and interpretation of objective derivatives in continuum mechanics.
method Demonstrates that objective derivatives correspond to covariant derivatives on the manifold of Riemannian metrics.
result Objective derivatives are unified as covariant derivatives on the manifold of Riemannian metrics.

A hybrid approach links fMRI data to deep features for visual category decoding.

problem Lack of practical fMRI decoder with CNN structure due to limited brain data.
method Kernel Canonical Correlation Analysis linking fMRI and deep learnt representations.
result Effective in distinguishing semantic visual categories using only brain imaging data.

End-to-end CCA optimizes both discriminative and latent space projections for multi-view learning.

problem Lack of class label information in CCA for multi-view learning tasks.
method Simultaneously optimizes a CCA-based and a task objective in an end-to-end manner to learn a non-linear CCA projection.
result Significant improvement in cross-view classification, regularization with a second view, and semi-supervised learning.

A new method for clearing liability networks using sheaves on directed hypergraphs.

problem Clearing in liability networks using a novel mathematical approach.
method Associate a liability sheaf on a directed hypergraph to a liability network, identifying clearing configurations as global sections of this sheaf.
result Clearing configurations are precisely the global sections of the sheaf, and the sheaf construction is functorial under change of coefficient category.

In this paper we continue to study equivariant pencil liftings and differential operators on the algebra of densities. We emphasize the role that the geometry of the extended manifold plays. Firstly we consider basic examples. We give a projective line of diff(MM)-equivariant pencil liftings for first order operators,…

2014-01-31abs ↗pdf ↗

The principal objective in this paer is to study the relationship between the old kingdom of differential geometry (the category of smooth manifolds) and its new kingdom (the category of functors on the category of Weil algebras to some smooth category). It is shown that the canonical embedding of the old kingdom into …

2012-10-12abs ↗pdf ↗

We show that for a generic simple closed curve C in the asymptotic boundary of a Gromov hyperbolic 3-space with cocompact metric X, there exist a unique least area plane P in X with asymptotic boundary C. This result has interesting topological applications for constructions of canonical 2-dimensional objects in 3-mani…

2008-05-14abs ↗pdf ↗

We introduce a notion of p-rough integrator on any Banach manifolds, for any p1p\geq 1, which plays the role of weak geometric Holder p-rough paths in the usual Banach space setting. The awaited results on rough differential equations driven by such objects are proved, and a canonical representation is given if the man…

2014-03-13abs ↗pdf ↗

The purpose of this paper is to present the construction of a canonical determinant functional on elliptic pseudodifferential operators associated to the Guillemin-Wodzicki residue trace. The resulting functional is multiplicative, a local invariant, and not defined by a regularization procedure. The residue determinan…

2004-06-14abs ↗pdf ↗

Two new methods for analyzing repeated measures data using embeddings into Reproducing Kernel Hilbert Spaces.

problem Analyzing complex data structures with multiple features over time.
method Two generalizations of canonical correlation analysis for repeated measures data using embeddings into Reproducing Kernel Hilbert Spaces.
result Consistency rates for transformation and correlation estimators, relaxing common assumptions.

A notion of an algebroid - a generalization of a Lie algebroid structure is introduced. We show that many objects of the differential calculus on a manifold M associated with the canonical Lie algebroid structure on T^M can be obtained in the framework of a general algebroid. Also a compatibility condition which leads,…

1999-09-29abs ↗pdf ↗

In this paper, we study Absolute Parallelism (AP-) geometry on the tangent bundle TMTM of a manifold MM. Accordingly, all geometric objects defined in this geometry are not only functions of the positional argument xx, but also depend on the directional argument yy. Moreover, many new geometric objects, which have n…

2008-05-09abs ↗pdf ↗

The objective of the present paper (the second in a series of four) is to give a theory of multivector and extensor fields on a smooth manifold M of arbitrary topology based on the powerful geometric algebra of multivectors and extensors. Our approach does not suffer the problems of earlier attempts which are restricte…

2005-01-31abs ↗pdf ↗

New geometric objects generalize Lie groupoids, with nontrivial tangent bundle properties.

problem Generalizing Lie groupoids to nonassociative structures.
method Introducing quasiloopoids and loopoids, proving properties of their tangent bundles, and reformulating discrete mechanics.
result Tangent bundles of loopoids are canonically loopoids, but cotangent bundles are not.

We recall the main facts about the odd Laplacian acting on half-densities on an odd symplectic manifold and discuss a homological interpretation for it suggested recently by P. {Š}evera. We study the relationship of odd symplectic geometry with classical objects. We show that the Berezinian of a canonical transformatio…

2006-06-22abs ↗pdf ↗

New sparse CCA method finds interpretable associations in multi-view data.

problem Discovering interpretable associations in high-dimensional multi-view data.
method Inspired by sparse PCA, proposed a convex maximization program equivalent to non-convex sparse CCA formulation, using gradient method to reduce search space.
result Proposed two-step algorithm and new sparse CCA variants (Directed Sparse CCA, Multi-View sCCA) for multi-omic studies.

Abstract: Generalizes stability theories over toric varieties and Novikov type rings.

problem Stability theories over toric varieties and Novikov type base.
method Generalization of stability theories to families over toric varieties and their analytic analogues.
result Established properness of moduli of Calabi-Yau cones and Kahler-Ricci solitons.

We describe an interesting relation between Lie 2-algebras, the Kac-Moody central extensions of loop groups, and the group String(n)\mathrm{String}(n). A Lie 2-algebra is a categorified version of a Lie algebra where the Jacobi identity holds up to a natural isomorphism called the "Jacobiator". Similarly, a Lie 2-group is a c…

2005-04-07abs ↗pdf ↗

Generalizes Tulczyjew triples for contact manifolds in Hamiltonian and Lagrangian formalisms.

problem Tackles the need for a geometric tool in contact manifolds.
method Introduces a generalized Tulczyjew triple for contact manifolds.
result Contact Hamiltonians and Lagrangians as sections of line bundles determine dynamics on contact phase space.

A new method for learning manifolds efficiently using canonical basis functions.

problem Learning manifolds in high-dimensional data with efficient and distinct latent dimensions.
method Proposes a novel optimization objective to enforce a transformation matrix with a few prominent and non-degenerate basis functions.
result Demonstrates that minimizing the off-diagonal manifold metric elements 1\ell_1-norm results in a more efficient latent space representation.