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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.

169,051 papers · 148 categories

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23477093 · May 202619922001200920182026
48 results for canonical elements

We construct a canonical basis of two-cycles, on a K3K3 surface, in which the intersection form takes the canonical form 2E8(1)3H2E_8(-1) \oplus 3H. The basic elements are realized by formal sums of smooth submanifolds.

2017-08-20abs ↗pdf ↗

Quantum polynomials are derived from a specific tribracket structure.

problem Quantum enhancement polynomials for oriented links.
method Defined using a canonical two-element tribracket, proving polynomials can be derived from five specific ones.
result Universal quantum enhancement polynomials are strictly stronger than the Jones polynomial.

Some cohomology elements, called νν classes, as a supergeneralization of universal Chern classes, are introduced for canonical super line bundles over νν projective spaces, a novel supergeometric generalization of projective spaces. It is shown that these classes may be described by analytic representatives of elemen…

2018-01-20abs ↗pdf ↗

Geometrically proves Zabrodin-Wiegmann conjecture for integer QH states.

problem Proving a geometric version of Zabrodin-Wiegmann conjecture for integer Quantum Hall states.
method Using Riemann surfaces, canonical sections, and asymptotic expansions, the authors construct a canonical element in cohomology and relate its norm to the partition function.
result The constant term of the asymptotic expansion of the partition function matches a geometric version of Zabrodin-Wiegmann's prediction.

The paper improves convergence rates of curvature approximations using Regge elements.

problem Improving convergence rates of curvature approximations using Regge elements.
method Investigates the interplay between polynomial degree of curvature lifting and metric tensor degree in Regge finite element space.
result Higher convergence rates are achieved by reducing the polynomial degree of curvature lifting and using linear Regge elements.

Characterizes knotted subgroups of Lie groups and provides examples.

problem Defining and understanding knotted subgroups of Lie groups.
method Geometric equivalence, one-parameter subgroups, infinitesimal elements, canonical forms, spectrum analysis.
result Completely classified knotted subgroups of SL(2,R) and SL(3,R).

Introduces a reduction system for Artin-Tits groups, improving algorithms and proving periodicity results.

problem Computing reduction systems in Artin-Tits groups of spherical type.
method Introduces a canonical reduction system, proves periodicity of centralizers, and provides algorithms.
result Improved algorithms for computing reduction systems in braid groups and Artin-Tits groups.

This paper solves the structure of link concordance groups, proving they are infinitely generated.

problem Determining the structure of link concordance groups with a marked component.
method Proving the complements are isomorphic to Z^∞ ⊕ (Z/2Z)^∞ and introducing prime elements.
result Proves both complements of link concordance groups are Z^∞ ⊕ (Z/2Z)^∞.

The Drinfeld double of a finite dimensional Hopf algebra is a quasi-triangular Hopf algebra with the canonical element as the universal RR-matrix, and one can obtain a ribbon Hopf algebra by adding the ribbon element. The universal quantum invariant of framed links is constructed using a ribbon Hopf algebra. In that c…

2016-12-25abs ↗pdf ↗

The semi-classical data attached to stacks of algebroids in the sense of Kashiwara and Kontsevich are Maurer-Cartan elements on complex manifolds, which we call extended Poisson structures as they generalize holomorphic Poisson structures. A canonical Lie algebroid is associated to each Maurer-Cartan element. We study …

2009-04-26abs ↗pdf ↗

Let xi be a smooth oriented vector bundle, with n-dimensional fibre, over a smooth manifold M. Denote by xi-hat the fibrewise one-point compactification of xi. The main purpose of this paper is to define geometrically a canonical element Upsilon(xi) in H^n(xi-hat,Q) (H^n(xi-hat,Z) tensor 1/2, to be more precise). The e…

1999-11-01abs ↗pdf ↗

We classify all harmonic maps with finite uniton number from a Riemann surface into an arbitrary compact simple Lie group GG, whether GG has trivial centre or not, in terms of certain pieces of the Bruhat decomposition of the group ΩalgGΩ_\mathrm{alg}{G} of algebraic loops in GG and corresponding canonical elements. Th…

2014-05-15abs ↗pdf ↗

We introduce a notion of natural orderings of elements of finite connected quandles of order nn. When the elements of such a quandle QQ are already ordered naturally, any automophism on QQ is a natural ordering. Although there are many natural orderings, the operation tables for such orderings coincide when the perm…

2011-10-09abs ↗pdf ↗

Canonical coordinates defined for minimal time-like surfaces in n-dimensional Minkowski space.

problem Characterizing canonical coordinates on minimal time-like surfaces.
method Introducing canonical coordinates and proving their existence and uniqueness; using analysis over the algebra of double numbers.
result Canonical coordinates on minimal time-like surfaces are characterized by a natural condition for a complex function over the algebra of double numbers.

The paper constructs discrete Hessian and divdiv complexes on triangulations and proves their cohomology isomorphic to continuous versions.

problem Discrete construction of Hessian and divdiv complexes on triangulations.
method Construction of discrete Hessian and divdiv complexes using finite elements and Dirac measures on triangulations.
result The cohomology of the constructed complexes is isomorphic to the continuous de Rham cohomology.

We construct a canonical element, called the refined analytic torsion, of the determinant line of the cohomology of a closed oriented odd-dimensional manifold M with coefficients in a flat complex vector bundle E. We compute the Ray-Singer norm of the refined analytic torsion. In particular, if there exists a flat Herm…

2005-10-25abs ↗pdf ↗

We develop an inductive approach to the representation theory of the Yokonuma-Hecke algebra Yd,n(q){\rm Y}_{d,n}(q), based on the study of the spectrum of its Jucys-Murphy elements which are defined here. We give explicit formulas for the irreducible representations of Yd,n(q){\rm Y}_{d,n}(q) in terms of standard dd-tableaux; w…

2013-02-25abs ↗pdf ↗

The multimodal web elements such as text and images are associated with inherent memory costs to store and transfer over the Internet. With the limited network connectivity in developing countries, webpage rendering gets delayed in the presence of high-memory demanding elements such as images (relative to text). To ove…

2017-11-06abs ↗pdf ↗

Given a complex 4-fold XX with an (Calabi-Yau 3-fold) anti-canonical divisor YY, we study relative Donaldson-Thomas invariants for this pair, which are elements in the Donaldson-Thomas cohomologies of YY. We also discuss gluing formulas which relate relative invariants and DT4DT_{4} invariants for Calabi-Yau 4-folds.

2015-02-16abs ↗pdf ↗

We impose constraints on the odd coordinates of super Teichmüller space in the uniformization picture for the monodromies around Ramond punctures, thus reducing the overall odd dimension to be compatible with that of the moduli spaces of super Riemann surfaces. Namely, the monodromy of a puncture must be a true parabol…

2017-09-19abs ↗pdf ↗

In this paper we investigate fiber-wise linear complex Banach sub-Poisson structures defined canonically by the structure of a W*-algebra M. In particular we show that these structures are arranged in the short exact sequence of complex Banach sub-Poisson VB-groupoids with the groupoid of partially invertible elements …

2017-03-03abs ↗pdf ↗

Half grid diagrams prove every link can be represented by a special type of grid diagram.

problem Representing links using grid diagrams and related invariants.
method Defining half grid diagrams and constructing canonical pairs, proving equivalence to Jones' construction, relating to classical link invariants.
result Established a new method to relate the oriented Thompson index to classical link invariants and provided bounds for knot invariants.

Quantization of (-1)-shifted derived Poisson manifolds via BV-infinity operators.

problem Quantizing (1)(-1)-shifted derived Poisson manifolds.
method Using BV-infinity operators on the space of Berezinian half-densities, proving quantization via lifting of Maurer-Cartan elements.
result Quantization of (1)(-1)-shifted derived Poisson manifolds is equivalent to the vanishing of the second Poisson cohomology group.

The paper explores properties of Lie algebra g2 and related geometric structures.

problem Understanding the structure of Lie algebra g2 and its subalgebras.
method Analyzes properties of g2, constructs subalgebras, and proves canonical forms.
result An element of g2 cannot have rank 2, and if it has rank 4, its kernel is an associative subspace.

We give in explicit form the principal kinematic formula for the action of the affine unitary group on $\C^n$, together with a straightforward algebraic method for computing the full array of unitary kinematic formulas, expressed in terms of certain convex valuations introduced, essentially, by H. Tasaki. We introduce …

2008-01-04abs ↗pdf ↗

Study TMF-valued TQFT for closed 3-manifolds using torsion linking pairings.

problem Explicit description of TMF-module state space for closed 3-manifolds.
method Construct canonical invariants and tokenization from torsion linking pairings.
result Explicit model for TMF-module state space in terms of rank-one TMF-module.

Study uses random matrix test to find significant factors in cryptocurrency forecasts.

problem Determining the optimal number of factors in cryptocurrency forecast models.
method Applied a random matrix test to a forecast model of Reduced Rank Regression (RRR) on cryptocurrencies.
result Consistent results with visual inspection, minimal computational cost compared to cross-validation.

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.

We propose a Lie-theoretic definition of the tt*-Toda equations for any complex simple Lie algebra g\mathfrak{g}, based on the concept of topological-antitopological fusion which was introduced by Cecotti and Vafa. Our main result concerns the Stokes data of a certain meromorphic connection, whose isomonodromic deform…

2018-02-04abs ↗pdf ↗

We present an extension of the ergodic, mixing, and Bernoulli levels of the ergodic hierarchy for statistical models on curved manifolds, making use of elements of the information geometry. This extension focuses on the notion of statistical independence between the microscopical variables of the system. Moreover, we e…

2017-03-10abs ↗pdf ↗

The refined analytic torsion, defined by M. Braverman and T. Kappeler on closed manifolds, can be viewed as a refinement of the Ray-Singer torsion, since it is a canonical choice of an element with Ray-Singer norm one, in case of unitary representations. The complex phase of the refinement is given by the rho-invariant…

2008-08-04abs ↗pdf ↗

This article introduces a universal moduli space for the set whose archetypal element is a pair that consists of a metric and second fundamental form from a compact, oriented, positive genus minimal surface in some hyperbolic 3-manifold. This moduli space is a smooth, finite dimensional manifold with canonical maps to …

2004-10-13abs ↗pdf ↗

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.

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.