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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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18.8%37.5%56.3%75.0% · Mar 199319922001200920182026
48 results for Classical Mechanics

This text explains how fiber bundle structure is fundamental for classical physics.

problem None explicitly stated, but implied as understanding fiber bundles is crucial for physics.
method Explains the fiber bundle structure and its universality for physics laws.
result Fiber bundle structure is fundamental for classical physics laws.

This work generalizes Hamiltonian mechanics using closed differential forms.

problem Hidden invariants in classical Hamiltonian mechanics.
method Establishes a novel correspondence between generalized Hamiltonian mechanics and multisymplectic geometry.
result Key theorems linking classical and generalized Hamiltonian systems.

Study topological quantum mechanics on orbifolds with geometric interpretation.

problem Quantum mechanical models on symplectic orbifolds.
method Explicit orbifold version of quantum HKR map and exact semi-classical approximation.
result Geometric and quantum field theoretic interpretation of orbifold algebraic index.

We formulate a class of minimal tori in S^3 in terms of classical mechanics, reveal a curious property of the Clifford torus, and note that the question of periodicity can be made more explicit in a simple way.

2013-07-08abs ↗pdf ↗

New theoretical approaches about forecasting stock markets are proposed. A mathematization of the stock market in terms of arithmetical relations is given, where some simple (non-differential, non-fractal) expressions are also suggested as general stock price formuli in closed forms which are able to generate a variety…

2005-03-21abs ↗pdf ↗

In the framework of Galilei classical mechanics (i.e., general relativistic classical mechanics on a spacetime with absolute time) developed by Jadczyk and Modugno, we analyse systematically the relations between symmetries of the geometric objects. We show that the (holonomic) infinitesimal symmetries of the cosymplec…

2000-03-24abs ↗pdf ↗

The existence of the theory of `twisted cotangent bundles' (symplectic groupoids) allows to study classical mechanical systems which are generalized in the sense that their configurations form a Poisson manifold. It is natural to study from this point of view first such systems which arise in the context of some basic …

1996-12-04abs ↗pdf ↗

Study on relativistic nonholonomic mechanics with time-dependent constraints.

problem Formulating classical time-dependent nonholonomic mechanics.
method Invariant formulation using moving frames and Chaplygin systems.
result Hamiltonization of time-dependent constraints achieved.

A solution for the Weinstein's Problem in the general framework of generalized Lie algebroids is the target of this paper. We present the mechanical systems called by use, mechanical (?; ?)-systems, Lagrange mechanical (?; ?)-systems or Finsler mechanical (?; ?)-systems and we develop their geometries. We obtain the ca…

2011-08-14abs ↗pdf ↗

Classically time is kept fixed for infinitesimal variations in problems in mechanics. Apparently, there appears to be no mathematical justification in the literature for this standard procedure. This can be explained canonically by unveiling the intrinsic mathematical structure of time in Lagrangian mechanics. Moreover…

2008-01-27abs ↗pdf ↗

Model financial markets using open quantum systems to understand market imperfections.

problem Understanding market imperfections through imperfect trading mechanisms.
method Using open quantum systems to represent financial markets, characterizing orbits, and analyzing reduced density matrices.
result Non-classical modes of time evolution can incorporate factors like illiquid trades and imperfect trading mechanisms.

A new description, different by the classical theory of Hamiltonian Mechanics, in the general framework of generalized Lie algebroids is presented. In the particular case of Lie algebroids, new and important results are obtained. We present the \emph{dual mechanical systems} called by use, \emph{dual mechanical}$(ρ,η) …

2011-08-25abs ↗pdf ↗

In some previous papers, a Legendre duality between Lagrangian and Hamiltonian Mechanics has been developed. The (ρ,η)-tangent application of the Legendre bundle morphism associated to a Lagrangian L or Hamiltonian H is presented. Using that, a Legendre description of Lagrangian Mechanics and Hamiltonian Mechanics is d…

2011-08-29abs ↗pdf ↗

A new constructivist approach to modeling in economics and theory of consciousness is proposed. The state of elementary object is defined as a set of its measurable consumer properties. A proprietor's refusal or consent for the offered transaction is considered as a result of elementary economic measurement. We were al…

2011-10-24abs ↗pdf ↗

In the jet-bundle description of first-order classical field theories there are some elements, such as the lagrangian energy and the construction of the hamiltonian formalism, which require the prior choice of a connection. Bearing these facts in mind, we analyze the situation in the jet-bundle description of time-depe…

1995-03-02abs ↗pdf ↗

Paper uses second-order differential geometry to study stochastic mechanics.

problem Stochastic differential equations and their symmetries.
method Develops second-order differential geometry to study symmetries of SDEs and constructs stochastic mechanics.
result Establishes stochastic Lagrangian and Hamiltonian mechanics and their relations with HJB equations.

Estimates classical potential from stock price data using quantum mechanics.

problem Estimating classical potential from empirical stock price data.
method Quantum mechanical model of stock price distribution, estimating potential from wave function.
result Suggests methods to evaluate classical potential for Schrodinger equation.

Study of dynamic optimization in classical and quantum physics.

problem Optimization of systems with one state and one control variable.
method Analogy to classical mechanics and quantum physics, Dirac method, Pontryagin scheme, Hamilton-Jacobi-Bellman equation.
result Dynamic optimization results identical in classical and quantum frameworks.

Local gauge freedom in relativistic quantum mechanics is derived from a measurement principle for space and time. For the Dirac equation, one obtains local U(2,2) gauge transformations acting on the spinor index of the wave functions. This local U(2,2) symmetry allows a unified description of electrodynamics and genera…

1997-03-11abs ↗pdf ↗

Proposes a new method for publishing covariance matrices while maintaining privacy and preserving matrix properties.

problem Publishing covariance matrices while ensuring differential privacy and maintaining positive semi-definiteness.
method Uses a Wishart distribution to generate matrix noise for differential privacy in principal component analysis.
result Demonstrates better utility compared to the Laplace mechanism and provides a near optimal bound.

Functional integrals explain quantum mechanics and field theory.

problem Explaining quantum mechanics and field theory using functional integrals.
method Describes Feynman's path integral approach to quantum mechanics and field theory.
result Equivalence of path integral formalism to classical mechanics and quantum mechanics.

Develops new instance-optimality concepts in differential privacy.

problem Improving privacy guarantees in statistical estimation.
method Introduces local minimax risk and unbiased mechanisms, and develops inverse sensitivity mechanisms.
result Inverse sensitivity mechanisms are nearly instance optimal for a wide range of functions.

The abstract discusses connecting quantum mechanics and algebraic index theories.

problem Exploring the connection between quantum mechanics and algebraic index theories.
method Explains how the classical algebraic index theorem can be proved in terms of BV quantization of topological quantum mechanics and 2d chiral CFT.
result Shows how the generating function of all genus Gromov-Witten invariants on elliptic curves is mirror equivalent to an elliptic chiral index.

Complex geometry and symplectic geometry are mirrors in string theory. The recently developed generalised complex geometry interpolates between the two of them. On the other hand, the classical and quantum mechanics of a finite number of degrees of freedom are respectively described by a symplectic structure and a comp…

2004-11-01abs ↗pdf ↗

The paper generalizes Lagrangian mechanics on fibered manifolds.

problem Developing a generalized formulation of Lagrangian mechanics.
method Formulation on fibered manifolds, reduction theory for Lie groupoid actions.
result New results for Lagrangian mechanics on Lie algebroids, including a new coordinate-free formulation of equations of motion.

A close relationship between the classical Hamilton-Jacobi theory and the kinematic reduction of control systems by decoupling vector fields is shown in this paper. The geometric interpretation of this relationship relies on new mathematical techniques for mechanics defined on a skew-symmetric algebroid. This geometric…

2011-10-27abs ↗pdf ↗

Paper bridges quantum and classical mechanics for open systems.

problem Quantum open systems with bi-Lindblad structure.
method Develops a bridge between bi-Hamiltonian structures and GKSL formalism, introducing contact-compatible Lindblad generators.
result Provides a mathematical mechanism for semiclassical limit of quantum open systems.

Paper improves Gaussian mechanism for differential privacy with analytical calibration and denoising.

problem Limitations in the original Gaussian mechanism's variance formula for high and low privacy regimes.
method Developed an optimal Gaussian mechanism with analytical calibration using the Gaussian cumulative density function and post-processing denoising.
result Analytical calibration reduces noise variance by at least a third compared to the classical Gaussian mechanism, and denoising improves accuracy in high-dimensional data.

We discuss the quantization of mechanical systems for which the Hamiltonian vector fields of observables form the deformation of nn-dimensional oscilator algebra. Because of this fact these systems can be considered as "deformations" of the harmonic oscillator. The set of abovementioned mechanical systems are realized…

1995-08-04abs ↗pdf ↗

Unified framework for subsampling mechanisms with tighter privacy guarantees.

problem Improving privacy in machine learning models through subsampling.
method Conditional optimal transport for deriving mechanism-specific subsampling guarantees.
result Tighter privacy bounds for subsampled mechanisms compared to traditional methods.

The classical tools which ensure the completeness of vector fields and second order differential equations for mechanical systems are revisited. Possible extensions in three directions are discussed: infinite dimensional Banach and Hilbert manifolds, Finsler metrics and pseudo-Riemannian spaces, including links with so…

2013-03-25abs ↗pdf ↗