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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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71142212283 · May 202619922001200920182026
48 results for descriptive theory

Singular fiber resolution does not describe the spontaneous breaking of gauge symmetry in F-theory, as the corresponding branch of the moduli space does not exist in the theory. Accordingly, even non-abelian gauge theories have not been fully understood in global F-theory compactifications. We present a systematic disc…

2014-02-24abs ↗pdf ↗

Study shows LLC correlates with neural network compressibility.

problem Evaluating limits of neural network compression.
method Extended minimum description length principle using singular learning theory.
result Complexity estimates based on LLC are linearly correlated with compressibility.

Geometrically describes Jacobi equations for field theories with dissipation.

problem Describing field theories with dissipation geometrically.
method Prolongation of the Lagrangian on a k-cosymplectic formulation to describe Jacobi equations and a modified Lagrangian for variational formulation.
result Variational formulation of field theories with dissipation.

This paper describes differential K-theory using Hilbert bundles and superconnections.

problem Formulating differential K-theory for infinite-dimensional manifolds.
method Introducing triples of Hilbert bundles, superconnections, and differential forms as generators, with relations involving eta forms.
result Established the differential K-groups Kˇ0(M)\check{K}^0(M) and Kˇ1(M)\check{K}^1(M), and provided a model for twisted differential K-theory.

A new multiagent model of the stock market is formulated that contains four states in which the agents may be located. Next, the model is reformulated in the language of the functional integral containing fluctuations of prices and quantities of cash flows. It is shown that in the functional integral of that type descr…

2013-10-31abs ↗pdf ↗

The aim of this paper is to propose an unambiguous intrinsic formalism for higher-order field theories which avoids the arbitrariness in the generalization of the conventional description of field theories, which implies the existence of different Cartan forms and Legendre transformations. We propose a differential-geo…

2009-06-02abs ↗pdf ↗

The paper characterizes boundaries in Turaev-Viro TQFTs and Dijkgraaf-Witten theories.

problem Characterizing boundaries in Turaev-Viro TQFTs and Dijkgraaf-Witten theories.
method Identifying explicit boundary locality conditions and proving consistency with state sum models.
result Turaev-Viro and Dijkgraaf-Witten theories with boundary defects admit a state sum description.

This paper reviews three types of probabilistic models: discriminative, descriptive, and generative.

problem None explicitly stated, but the review aims to unify these models under a common framework.
method Review and comparison of discriminative, descriptive, and generative models.
result Unified framework for understanding discriminative, descriptive, and generative models.

The Rusk-Skinner formalism was developed in order to give a geometrical unified formalism for describing mechanical systems. It incorporates all the characteristics of Lagrangian and Hamiltonian descriptions of these systems (including dynamical equations and solutions, constraints, Legendre map, evolution operators, e…

2002-12-02abs ↗pdf ↗

We develop an approach to Khovanov homology of knots via gauge theory (previous physics-based approches involved other descriptions of the relevant spaces of BPS states). The starting point is a system of D3-branes ending on an NS5-brane with a nonzero theta-angle. On the one hand, this system can be related to a Chern…

2011-01-17abs ↗pdf ↗

Using properties of the determinant line bundle for a family of elliptic boundary value problems, we explain how the Fock space functor defines an axiomatic quantum field theory which formally models the Fermionic path integral. The 'sewing axiom' of the theory arises as an algebraic pasting law for the determinant of …

1999-08-31abs ↗pdf ↗

SageMath package diffstrata calculates intersection theory on abelian differentials.

problem Computing intersection theory on the boundary of strata of abelian differentials.
method Explicit combinatorial description of the boundary, implemented algorithms in SageMath.
result Computes the Euler characteristic of strata using intersection theory.

The paper describes Calabi-Yau metrics on complex flag manifolds using Lie theory.

problem Finding complete Calabi-Yau metrics on canonical bundles of complex flag manifolds.
method Using Lie theory and the Calabi ansatz technique to provide explicit examples of noncompact complete Calabi-Yau manifolds.
result Explicit examples of noncompact complete Calabi-Yau manifolds, including canonical bundles of non-toric flag manifolds.

Study develops time-continuous models and probabilistic descriptions for agent-based economic market models.

problem Formulating and describing agent-based economic market models in a time-continuous and probabilistic manner.
method Derived time-continuous formulations, discussed impact of time-scaling, proved stability, presented probabilistic descriptions using kinetic theory.
result Time-continuous formulations and probabilistic descriptions for agent-based economic market models.

Let FF be a finitely generated free group. By using Bestvina-Handel theory, as well as some further improvements, the eigengroups of a given automorphism of FF (and its fixed subgroup among them) are globally analyzed and described. In particular, an explicit description of all subgroups of FF which occur as the fix…

2003-06-26abs ↗pdf ↗

We review the basic elements of the geometrical formalism for description of gauge fields and the theory of invariant connections, and their applications to the coset space dimensional reduction of Yang-Mills theories. We also discuss the problem of classification of principal fibre bundles, which is important for the …

2003-09-29abs ↗pdf ↗

Study finite type invariants for knots in rational homology 3-spheres.

problem Understanding invariants of knots in rational homology 3-spheres.
method Combinatorial description and analysis of null Lagrangian-preserving surgeries.
result Universal finite type invariants for null-homologous knots with trivial Alexander polynomial.

We generalize the notion of parallel transport along paths for abelian bundles to parallel transport along surfaces for abelian gerbes using an embedded Topological Quantum Field Theory (TQFT) approach. We show both for bundles and gerbes with connection that there is a one-to-one correspondence between their local des…

2003-02-06abs ↗pdf ↗

Unified description of adjoint knot polynomials for various knots.

problem Describing adjoint knot polynomials for different types of knots.
method Developing a universal form for quantum dimensions and Racah matrices, extending the eigenvalue conjecture.
result Unified description of adjoint knot polynomials for all arborescent knots.

This paper uses a path integral approach to model complex economic systems with many agents.

problem Modeling economic systems with a large number of interacting agents.
method Develops a path integral formalism to describe the behavior of a large number of agents in an economic system.
result The method provides an analytical treatment of business cycle models with many agents, revealing various phases and interactions.

Paper introduces Ddim, a new measure of model complexity, for MDL-based learning and change detection.

problem Characterizing the complexity of probabilistic models for efficient learning and change detection.
method Introduces descriptive dimension (Ddim) as a measure of model complexity. Derives convergence rates and error probabilities for MDL-based learning and change detection.
result Ddim characterizes the performance of MDL-based learning and change detection.

In this paper, we examine Kitaev's lattice model for an arbitrary complex, semisimple Hopf algebra. We prove that this model gives the same topological invariants as Turaev-Viro theory. Using the description of Turaev-Viro theory as an extended TQFT, we prove that the excited states of the Kitaev model correspond to Tu…

2012-06-11abs ↗pdf ↗

We construct a cohomology theory for oriented links using singular cobordisms and a special type of 2-dimensional Topological Quantum Field Theory (TQFT), categorifying the quantum sl(2) invariant. In particular, we give a description of the universal dot-free sl(2) foam cohomology for links via a TQFT.

2010-01-12abs ↗pdf ↗