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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.

168,742 papers · 148 categories

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121241362482 · Jun 202019922001200920172026
48 results for Complex Clifford algebras

Extends Kostant's results to symmetric pairs in Clifford algebras.

problem Analyzing k\mathfrak{k}-invariants in Clifford algebras of symmetric pairs.
method Proves Cartan theorem, transgression theorem, Harish-Chandra isomorphism, and Clifford algebra conjecture for relative case.
result Establishes a relative transgression theorem and Harish-Chandra isomorphism for Clifford algebras.

We study possible cases of complex simple graded Lie algebras of depth 2, which are the Tanaka prolongations of pseudo HH-type Lie algebras arising through representation of Clifford algebras. We show that the complex simple Lie algebras of type BnB_n with 2|2|-grading do not contain non-Heisenberg pseudo HH-type Li…

2017-12-24abs ↗pdf ↗

We consider the diffeological version of the Clifford algebra of a (diffeological) finite-dimensional vector space; we start by commenting on the notion of a diffeological algebra (which is the expected analogue of the usual one) and that of a diffeological module (also an expected counterpart of the usual notion). Aft…

2015-05-26abs ↗pdf ↗

Classifies compact Clifford-Klein forms for specific Lie algebras.

problem Classifying compact Clifford-Klein forms for given Lie algebra structures.
method Using Onishchik's results on semisimple Lie algebras, the paper classifies forms for triples (g,h,l).
result New examples of reductive homogeneous spaces with non-standard compact Clifford-Klein forms.

In this paper we generalize the known DDVV-type inequalities for real (skew-)symmetric and complex (skew-)Hermitian matrices to arbitrary real, complex and quaternionic matrices. Inspired by the Erdős-Mordell inequality, we establish the DDVV-type inequalities for matrices in the subspaces spanned by a Clifford system …

2018-07-19abs ↗pdf ↗

This dissertation explores Clifford bundles and spinor fields in geometric and algebraic contexts.

problem Understanding spinor fields and their classification in geometric frameworks.
method Combines algebraic and geometric approaches to study Clifford structures on bundles and spinor fields.
result Identifies new spinor field classes in warped flux compactifications.

Non-trivial Clifford bundle from loop space tangent bundle.

problem Triviality obstruction of Clifford bundle on loop space.
method Constructing Clifford algebra bundle from loop space tangent bundle, showing non-triviality through Stiefel-Whitney and Pontrjagin classes.
result Clifford bundle is non-trivial, obstructed by manifold's Stiefel-Whitney and Pontrjagin classes.

Unified study of surfaces using Clifford algebras.

problem Classifying immersed surfaces in various manifolds.
method Using Clifford algebras to construct formalism for immersed bilegendrian surfaces.
result Full classifications of immersed bilegendrian surfaces in the unit tangent bundle of the 3-sphere.

This paper presents a spinorial representation for SpinC manifolds in Euclidean space.

problem Adapting spinorial representation to SpinC manifolds with complex structures.
method Using irreducible representations of complex Clifford algebras to build spinor bundles.
result Spinorial representation of SpinC manifolds in Euclidean space is achieved.

Study cohomology rings of Grassmannians using Clifford algebras and symmetric spaces.

problem Understanding cohomology rings of Grassmannians over different fields.
method Explicit generators and relations for de Rham cohomology rings, filtered deformations related to Clifford algebras.
result Explicit generators and relations for the de Rham cohomology rings of Grassmannians.

We consider the diffeological pseudo-bundles of exterior algebras, and the Clifford action of the corresponding Clifford algebras, associated to a given finite-dimensional and locally trivial diffeological vector pseudo-bundle, as well as the behavior of the former three constructions (exterior algebra, Clifford action…

2016-04-17abs ↗pdf ↗

Paper analyzes U(n)\mathrm{U}(n)-structures and their minimal left ideals.

problem Understanding U(n)\mathrm{U}(n)-structures and their minimal left ideals.
method Identifying U(n)\mathrm{U}(n)-structures with minimal left ideals via induced Kahler polynomial.
result Established link between U(n)\mathrm{U}(n)-structures and minimal left ideals for Clifford algebras.

Novel CG-EGNNs learn equivariant functions from Clifford algebras.

problem Lack of equivariance in high-order graph neural networks.
method Integrates high-order local structures with Clifford algebras for equivariant learning.
result CG-EGNNs outperform previous methods on various benchmarks.

We consider pseudo-Riemannian generalizations of Osserman, Clifford, and the duality principle properties for algebraic curvature tensors and investigate relations between them. We introduce quasi-Clifford curvature tensors using a generalized Clifford family and show that they are Osserman. This allows us to discover …

2018-05-14abs ↗pdf ↗

The study proves a geometric result related to Harish-Chandra's theorem.

problem Understanding the relationship between symmetric submanifolds and Harish-Chandra's theorem.
method Analyzing maximal tori in Clifford tori within Euclidean spaces.
result A compact, intrinsically symmetric submanifold is extrinsically symmetric if and only if its maximal tori are Clifford tori.

The study examines differential smoothness in specific Artin-Schelter regular algebras of dimension 5.

problem Investigating the differential smoothness of Artin-Schelter regular algebras of dimension 5.
method Analyzing the relationship between the number of generators and Gelfand-Kirillov dimension to identify structural obstructions.
result Certain two- and four-generator AS-regular algebras of global dimension five fail to admit a differential calculus, while a five-generator graded Clifford algebra provides a positive example.

Novel analysis of neural networks using geometric algebra and convex optimization.

problem Understanding the inner workings of deep neural networks.
method Geometric (Clifford) algebra and convex optimization.
result Optimal weights are given by the wedge product of training samples.

Geometric calculus introduced on pseudo-Riemannian manifolds without embedding.

problem Developing calculus on pseudo-Riemannian manifolds without embedding.
method Direct axiomatic approach to geometric calculus, paralleling general relativity.
result Full theory of differential calculus for vector, multivector, and tensor fields developed.

We construct families of differential graded algebras R and R \boxtimes R and give an algebraic formulation of the contact category of a disk through the differential graded category DGP(R) generated by some distinguished projective differential graded R-modules. The homology category H^0(DGP(R)) is a triangulated cate…

2012-10-21abs ↗pdf ↗

Extends spinor-horosphere correspondence to higher dimensions and new spinor types.

problem Constructing isomorphisms between spinors and horospheres in hyperbolic spaces.
method Generalizes Mathews' results to Lipschitz spinors and null multiflags in higher-dimensional hyperbolic spaces.
result Equivariant correspondence between two-component Lipschitz spinors and higher-dimensional horospheres.

We construct two infinite families of algebraic minimal cones in RnR^{n}. The first family consists of minimal cubics given explicitly in terms of the Clifford systems. We show that the classes of congruent minimal cubics are in one to one correspondence with those of geometrically equivalent Clifford systems. As a byp…

2010-02-28abs ↗pdf ↗

Study uses geometric algebra to analyze credit cycles, revealing dangerous feedback loops.

problem Understanding and predicting dangerous feedback loops in credit cycles.
method Represent economic states as multi-vectors in Clifford algebra, focusing on bivector elements for rotational coupling.
result Geometric relationship between unemployment and credit contraction shifts from simple correlation to dangerous rotational dynamics during crises.

1. Translated by Thomas E. Cecil, Department of Mathematics and Computer Science, College of the Holy Cross, Worcester, MA 01610, USA; E-mail address: cecil@mathcs.holycross.edu 2. Typed by Wenjiao Yan, School of Mathematical Sciences, Laboratory of Mathematics and Complex Systems, Beijing Normal University, Beijing 10…

2011-12-13abs ↗pdf ↗

The paper studies Clifford-Bianchi groups acting on hyperbolic spaces and their properties.

problem Understanding the actions of Clifford-Bianchi groups on hyperbolic spaces.
method Developed the abstract and computational theory for determining fundamental domains and generators for orders in low dimensions.
result Found that Clifford-Bianchi groups are arithmetic subgroups of SO(1, n+1) and their Möbius action.

GKP codes connect quantum gates to algebraic curves, enabling fault-tolerant quantum computation.

problem Implementing fault-tolerant quantum computation in quantum harmonic oscillator systems.
method Exploring the topological and algebraic structure of GKP codes, showing how gates correspond to symplectic automorphisms and mapping class groups of surfaces.
result GKP Clifford gates are identified with symplectic automorphisms of GKP lattices and mapping class groups of surfaces, providing a topological interpretation of fault tolerance.

Let (M,g)(M,g) be a pseudo-Riemannian manifold of signature (p,q)(p,q). We construct mutually quasi-inverse equivalences between the groupoid of bundles of weakly-faithful complex Clifford modules on (M,g)(M,g) and the groupoid of reduced complex Lipschitz structures on (M,g)(M,g). As an application, we show that (M,g)(M,g) admits a …

2017-11-21abs ↗pdf ↗

In this paper we study unitary braid group representations associated with Majorana Fermions. Majorana Fermions are represented by Majorana operators, elements of a Clifford algebra. The paper recalls and proves a general result about braid group representations associated with Clifford algebras, and compares this resu…

2017-10-12abs ↗pdf ↗

Defines algebraic structures in Lagrangian Floer cohomology using differential forms.

problem Modeling algebraic structures in Lagrangian Floer cohomology.
method Defines two algebra structures using differential forms and a closed-open map, showing they coincide.
result Two algebra structures for the 2-dimensional Clifford torus coincide.

Consider a smooth map from a neighborhood of the origin in a real vector space to a neighborhood of the origin in a Euclidean space. Suppose that this map takes all germs of lines passing through the origin to germs of Euclidean circles, or lines, or a point. We prove that under some simple additional assumptions this …

2002-10-15abs ↗pdf ↗

In this paper we study a Clifford algebra generalization of the quaternions and its relationship with braid group representations related to Majorana fermions. The Fibonacci model for topological quantum computing is based on the fusion rules for a Majorana fermion. Majorana fermions can be seen not only in the structu…

2016-03-25abs ↗pdf ↗