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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.

168,695 papers · 148 categories

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9182635 · May 202619922001200920172026
48 results for commutator calculus

New calculus framework for vector bundles with metrics.

problem Developing calculus for vector bundles with fiber metrics.
method Adapting differential calculus to graded commutative algebras and focusing on diole and triole algebras.
result Triole algebra provides a suitable environment for vector bundle calculus with fiber metrics.

The paper connects calculus, gauge theory, and noncommutative worlds.

problem Exploring how gauge theoretic structures emerge in non-commutative calculus.
method Develops a non-commutative calculus framework to study gauge theory, Hamiltonian mechanics, and quantum mechanics.
result A covariant Levi-Civita connection is derived in this non-commutative calculus, satisfying specific properties.

The concept of $\Zn$-supermanifold has been recently proposed as a natural generalization of classical ($\Zs$-graded) supergeometry, allowing for more complicated commutativity constraints. Here we continue the study of $\Zn$-supergeometry by developing the foundations of differential calculus on $\Zn$-supermanifolds.

2016-08-02abs ↗pdf ↗

A non-commutative differential calculus on the hh-superplane is presented via a contraction of the qq-superplane. An R-matrix which satisfies both ungraded and graded Yang-Baxter equations is obtained and a new deformation of the (1+1)(1+1) dimensional classical phase space (the super-Heisenberg algebra) is introduced.

2001-12-12abs ↗pdf ↗

New algebraic formalism for differential calculus in Diolic algebras.

problem Studying differential calculus in vector bundles.
method Introducing functors of differential calculus over arbitrary graded commutative algebras (DCGCA) and applying this to Diolic algebras.
result Recovery of well-known objects and notions from ordinary differential, symplectic, and Poisson geometry, with unique aspects.

A gauged bi-differential calculus over an associative (and not necessarily commutative) algebra A is an N-graded left A-module with two covariant derivatives acting on it which, as a consequence of certain (e.g., nonlinear differential) equations, are flat and anticommute. As a consequence, there is an iterative constr…

1999-08-17abs ↗pdf ↗

This paper explores how neural network width and depth behave as they approach infinity.

problem Understanding the behavior of neural functions as width and depth go to infinity.
method Formal definition of commutativity framework, study of neural covariance kernel, novel proof techniques.
result Taking width and depth to infinity in a deep neural network with skip connections results in the same covariance structure, regardless of the order of taking limits.

Abstract: Tangent categories get a Cartan calculus with scalar multiplication by a commutative ring.

problem Constructing a Cartan calculus in tangent categories.
method Define scalar multiplication by a commutative ring object RR to equip tangent bundles with RR-module structure.
result Every object in tangent categories carries a Cartan calculus of Lie-Rinehart forms.

We outline the notions and concepts of the calculus of variational multivectors within the Poisson formalism over the spaces of infinite jets of mappings from commutative (non)graded smooth manifolds to the factors of noncommutative associative algebras over the equivalence under cyclic permutations of the letters in t…

2011-12-25abs ↗pdf ↗

Since the discovery of differential calculus by Newton and Leibniz and the subsequent continuous growth of its applications to physics, mechanics, geometry, etc, it was observed that partial derivatives in the study of various natural problems are (self-)organized in certain structures usually called geometric. Tensors…

2015-11-21abs ↗pdf ↗

Families of objects appear in several contexts, like algebraic topology, theory of deformations, theoretical physics, etc. An unified coordinate-free algebraic framework for families of geometrical quantities is presented here, which allows one to work without introducing ad hoc spaces, by using the language of differe…

2013-02-08abs ↗pdf ↗

We interpret tensors on a smooth manifold M as differential forms over a graded commutative algebra called the algebra of iterated differential forms over M. This allows us to put standard tensor calculus in a new differentially closed context and, in particular, enriches it with new natural operations. Applications wi…

2006-05-04abs ↗pdf ↗

Recently, some concepts such as Hom-algebras, Hom-Lie algebras, Hom-Lie admissible algebras, Hom-coalgebras are studied and some of classical properties of algebras and some geometric objects are extended on them. In this paper by recall the concept of Hom-ρρ-commutative algebras, we intend to develop some of the most…

2018-10-29abs ↗pdf ↗

The paper classifies links up to link-homotopy using claspers.

problem Classifying links up to link-homotopy.
method Using Habiro's clasper calculus, defining a linear representation of the homotopy braid group, and providing a geometric proof.
result Geometric proof of Levine's classification of 4-component links and further classification of 5-component links in the algebraically split case.

The construction of invariants of three-dimensional manifolds with a triangulated boundary, proposed earlier by the author for the case when the boundary consists of not more than one connected component, is generalized to any number of components. These invariants are based on the torsion of acyclic complexes of geome…

2008-06-16abs ↗pdf ↗

The short-time heat kernel expansion of elliptic operators provides a link between local and global features of classical geometries. For many geometric structures related to (non-)involutive distributions, the natural differential operators tend to be Rockland, hence hypoelliptic. In this paper we establish a universa…

2017-12-19abs ↗pdf ↗

Following Gorokhovsky and Lott and using an extension of the b-pseudodifferential calculus of Melrose, we give a formula for the Chern character of the Dirac index class of a longitudinal Dirac type operators on a foliated manifold with boundary. For this purpose we use the Bismut local index formula in the context of …

2007-01-17abs ↗pdf ↗

Jacobi algebroids (i.e. `Jacobi versions' of Lie algebroids) are studied in the context of graded Jacobi brackets on graded commutative algebras. This unifies varios concepts of graded Lie structures in geometry and physics. A method of describing such structures by classical Lie algebroids via certain gauging (in the …

2002-07-02abs ↗pdf ↗

The Leibniz rule for derivations is invariant under cyclic permutations of co-multiples within the arguments of derivations. We explore the implications of this principle: in effect, we construct a class of noncommutative bundles in which the sheaves of algebras of walks along a tesselated affine manifold form the base…

2012-10-02abs ↗pdf ↗

Proves existence and trapped surface formation for Einstein-Vlasov system without symmetry assumptions.

problem Formation of trapped surfaces in Einstein-Vlasov system without symmetry.
method Calibrated hierarchy of estimates, refined renormalization, strategic restriction of elliptic estimates, precise commutator calculus.
result First large-data, symmetry-free construction of dynamical black hole formation.

Innovative advances validate a conjecture on maximal hypoellipticity in sub-Riemannian geometry.

problem Characterizing maximal hypoellipticity in sub-Riemannian geometry.
method Generalization of Connes tangent groupoid, pseudodifferential calculus, and invertibility of principal symbol.
result Validation of Helffer and Nourrigat's conjecture on maximal hypoellipticity.

Study first-order locally convex Lie algebroids in Bastiani calculus.

problem Define and study first-order locally convex Lie algebroids.
method Define sheaves of Lie algebroid forms and morphisms, prove category structure, study representations and cohomology.
result First-order locally convex Lie algebroids form a category and have applications in Lie II theorems.

The aim of this paper is to present a short introduction to supergeometry on pure odd supermanifolds. (Pseudo)differential forms, Cartan calculus (DeRham differential, Lie derivative, "inner" product), metric, inner product, Killing's vector fields, Hodge star operator, integral forms, co-differential and connection on…

2003-09-23abs ↗pdf ↗

Extends elliptic operator regularity to maximally hypoelliptic operators.

problem Maximally hypoelliptic differential operators and their regularity.
method Define a principal symbol for arbitrary differential operators involving vector fields and their commutators.
result Proves the invertibility of the principal symbol is equivalent to maximally hypoellipticity, answering a conjecture.

It is shown that the new formula for the field theory Poisson brackets arise naturally in the extension of the formal variational calculus incorporating divergences. The linear spaces of local functionals, evolutionary vector fields, functional forms, multi-vectors and differential operators become graded with respect …

1998-09-18abs ↗pdf ↗

New complex structures found in quantum SU(3) manifold.

problem Exploring non-commutative complex structures in quantum SU(3) manifold.
method Examined the rank two case of quantum SU(3) manifold, analyzing its differential calculus and non-commutative complex geometry.
result Found that the number of almost-complex structures reduces from 8 to 4, and each is integrable (complex structure).

We construct an algebra of pseudodifferential operators on each groupoid in a class that generalizes differentiable groupoids to allow manifolds with corners. We show that this construction encompasses many examples. The subalgebra of regularizing operators is identified with the smooth algebra of the groupoid, in the …

1997-02-11abs ↗pdf ↗

Given a unital associatve graded algebra we construct the graded q-differential algebra by means of a graded q-commutator, where q is a primitive N-th root of unity. The N-th power (N>1) of the differential of this graded q-differential algebra is equal to zero. We use our approach to construct the graded q-differentia…

2005-09-21abs ↗pdf ↗

The paper introduces a method to deform submanifolds in Euclidean space using Drinfel'd twists.

problem Constructing noncommutative deformations of submanifolds in Euclidean space.
method Using Drinfel'd twist deformation of differential geometry, the paper proposes a general procedure to construct noncommutative deformations of an embedded submanifold.
result The method allows for consistent projection of connections and can be applied to various submanifolds like cylinders and hyperboloids.

Construct noncommutative deformations of algebraic submanifolds in R^n.

problem Deforming algebraic submanifolds in noncommutative geometry.
method Using twisted differential geometry and Drinfel'd twists, constructing noncommutative deformations of algebraic submanifolds.
result Explicitly worked out deformations of quadrics in R^3.

The complex of "stable forms" on supermanifolds is studied. Stable forms on MM are represented by certain Lagrangians of "copaths" (formal systems of equations, which may or may not specify actual surfaces) on M×RDM\times\mathbb R^D. Changes of DD give rise to stability isomorphisms. The Cartan--de Rham complex made of…

1999-12-22abs ↗pdf ↗

This study explores magnetic trajectories on the Heisenberg group, finding symmetries and solutions.

problem Understanding magnetic geodesics on the Heisenberg group with invariant Lorentz force.
method Analyzing the Heisenberg Lie group with a non-commutative product, deriving magnetic equations, identifying symmetries, and solving variational problems.
result Magnetic trajectories are solutions to a variational problem, providing explicit examples of Lagrangians.

We consider the following construction of quantization. For a Riemannian manifold MM the space of forms on TMT^*M is made into a space of (full) symbols of operators acting on forms on MM. This gives rise to the composition of symbols, which is a deformation of the (``super'')commutative multiplication of forms. The …

1998-09-23abs ↗pdf ↗

We compute the Ricci curvature of a curved noncommutative three torus. The computation is done both for conformal and non-conformal perturbations of the flat metric. To perturb the flat metric, the standard volume form on the noncommutative three torus is perturbed and the corresponding perturbed Laplacian is analyzed.…

2018-08-09abs ↗pdf ↗