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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.

168,695 papers · 148 categories

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78156233311 · Jun 202019922001200920172026
48 results for associated groups

The study shows acylindrical hyperbolicity for Artin groups not associated with joins or cones.

problem Proving acylindrical hyperbolicity for Artin groups of infinite type not associated with joins or cones.
method Developing and extending the clique-cube complex and action studies of Charney and Morris-Wright.
result Acylindrical hyperbolicity demonstrated for Artin groups of infinite type associated with graphs that are not cones.

The paper classifies Lorentzian Lie groups based on Codazzi tensors and quasi-statistical structures.

problem Classifying Lorentzian Lie groups based on specific tensor properties.
method Classification of three-dimensional Lorentzian Lie groups based on Ricci tensors and quasi-statistical structures associated with different affine connections.
result The paper classifies three-dimensional Lorentzian Lie groups based on Codazzi tensors and quasi-statistical structures associated with Bott, canonical, and Kobayashi-Nomizu connections.

Drinfel'd used associators to construct families of universal representations of braid groups. We consider semi-associators (i.e., we drop the pentagonal axiom and impose a normalization in degree one). We show that the process may be reversed, to obtain semi-associators from universal representations of 3-braids. We v…

2007-08-04abs ↗pdf ↗

The study proves conjecture for specific Artin groups.

problem Proving conjecture about Artin groups' properties.
method Analyzing Artin groups associated to triangle-free graphs and cones over square-free bipartite graphs.
result Proves conjecture for specific Artin groups.

The paper calculates Alexander polynomials for knots using finite group representations.

problem Calculating Alexander polynomials for knots using specific group representations.
method Defined twisted Alexander polynomials associated with regular representations of finite groups.
result Several formulas for the twisted Alexander polynomial are provided.

The study classifies special flows on specific geometric groups.

problem Classifying special flows on specific geometric groups.
method Classification of Left-invariant Ricci collineations associated to Yano connections on three-dimensional Lorentzian Lie groups.
result Results in classifying these flows.

Investigate local Lie group structure of bisections over compact manifolds

problem Study the local Lie group structure associated with the space of admissible bisections of a local Lie groupoid over a compact manifold.
method Investigate the relation of this local Lie group to the Lie algebra of sections of the associated Lie algebroid.
result Prove that the globalizability of a local Lie groupoid implies the globalizability of its associated local Lie group of bisections.

Study finds all conformal Ricci collineations on specific 3D Lorentzian groups.

problem Identifying conformal Ricci collineations on three-dimensional Lorentzian Lie groups.
method Analysis of Levi-Civita connection on specific Lie groups.
result Determined all conformal Ricci collineations associated with the Levi-Civita connection.

We prove that the Waldhausen Nil-group associated to a virtually cyclic groups that surjects onto the infinite dihedral group vanishes if and only if the corresponding Farrell Nil-group associated to the canonical index two subgroup is trivial. The proof uses the transfer map to establish one direction, and uses contro…

2006-09-25abs ↗pdf ↗

Study equidistribution for flows on geometrically finite convergence group actions.

problem Counting, mixing and equidistribution for flows on geometrically finite convergence group actions.
method Establishing results for finite BMS measures on flow spaces associated to geometrically finite convergence group actions.
result Results apply to flow spaces associated to relatively Anosov groups.

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 ↗

Study on string links invariant under associator choice and Grothendieck--Teichmüller group action.

problem Independence of Kontsevich invariant under associator choice for 2-component string links.
method Investigation of Kontsevich invariant for 2-component string links and action of Grothendieck--Teichmüller group.
result Non-trivial action of Grothendieck--Teichmüller group on algebra of 2-component string links.

The paper calculates curvature limits and Gauss-Bonnet theorems in the Heisenberg group.

problem Computing curvature limits and Gauss-Bonnet theorems in the Heisenberg group.
method Sub-Riemannian limits of Gaussian curvature, Schouten-Van Kampen affine connections, and adapted connections.
result Gauss-Bonnet theorems associated with Schouten-Van Kampen affine connections in the Heisenberg group.

Study finds all Ricci collineations for specific connections on 3D Lorentzian groups.

problem Identifying Ricci collineations for specific connections on 3D Lorentzian Lie groups.
method Examined left-invariant Ricci collineations associated with Bott connections on three-dimensional Lorentzian Lie groups.
result Determined all left-invariant Ricci collineations associated with the Bott connection.

Building on ideas from [DT98; DS11; Wal17; Hay17], we outline a proposal for constructing Floer homology groups associated with a G2-manifold. These groups are generated by associative submanifolds and solutions of the ADHM Seiberg-Witten equations. The construction is motivated by the analysis of various transitions w…

2017-12-22abs ↗pdf ↗

To any semigroup presentation P=ΣR\mathcal{P}= \langle Σ\mid \mathcal{R} \rangle and base word wΣ+w \in Σ^+ may be associated a nonpositively curved cube complex S(P,w)S(\mathcal{P},w), called a Squier complex, whose underlying graph consists of the words of Σ+Σ^+ equal to ww modulo P\mathcal{P} where two such words are lin…

2015-07-07abs ↗pdf ↗

The paper derives Gauss-Bonnet theorems for deformed connections in affine and rigid motions groups.

problem Computing curvature and geodesic curvature for surfaces and curves in affine and rigid motions groups.
method Defined deformed Schouten-Van Kampen connections, computed Gaussian curvature limits, and signed geodesic curvature.
result Derived Gauss-Bonnet theorems for deformed connections in affine and rigid motions groups.

Positive braids linked to knot invariants and geometric monodromy groups.

problem Understanding knot invariants and geometric monodromy groups for positive braids.
method Associate braid monodromy groups to positive braids, identify these groups with framed mapping class groups for knots, and use these to determine knot invariants.
result Geometric monodromy groups of irreducible singularities are determined by genus and Arf invariant of associated knots.

We investigate the planarity of the boundaries of right-angled Coxeter groups. We show that non-planarity of the defining graph does not necessarily imply non-planarity of every boundary of the associated right-angled Coxeter group, although it does in many cases. Our techniques yield a characterization of the triangle…

2019-02-04abs ↗pdf ↗

Our goal is to better understand the relationship between the polyhedron and the group associated with a fundamental domain in H^3. In this paper, we will study torsion-free groups and determine a formula for how many edge classes a given abstract polyhedron must have. We will use that result to classify all fundamenta…

2019-10-08abs ↗pdf ↗

We compute the log canonical thresholds of non-negatively curved singular hermitian metrics on ample linearized line bundles on bi-equivariant group compactifications of complex reductive groups. To this end, we associate to any such metric a convex function whose asymptotic behavior determines the log canonical thresh…

2015-10-17abs ↗pdf ↗

We compute the equivariant KK-homology of the classifying space for proper actions, for compact 3-dimensional hyperbolic reflection groups. This coincides with the topological KK-theory of the reduced CC^\ast-algebra associated to the group, via the Baum-Connes conjecture. We show that, for any such reflection group…

2017-07-17abs ↗pdf ↗

In this thesis, we introduce a new cohomology theory associated to a Lie 2-algebras and a new cohomology theory associated to a Lie 2-group. These cohomology theories are shown to extend the classical cohomology theories of Lie algebras and Lie groups in that their second groups classify extensions. We use this fact to…

2018-10-12abs ↗pdf ↗

Prove a global shadow lemma for Patterson-Sullivan measures associated with relatively Morse subgroups in higher-rank semisimple Lie groups.

problem Prove a global shadow lemma for Patterson-Sullivan measures associated with relatively Morse subgroups in higher-rank semisimple Lie groups.
method Prove a global shadow lemma for Patterson-Sullivan measures associated with relatively Morse subgroups in higher-rank semisimple Lie groups.
result Prove a global shadow lemma for Patterson-Sullivan measures associated with relatively Morse subgroups in higher-rank semisimple Lie groups.

We analyze the degree-two part of the Torelli group's associated graded.

problem Understanding the structure of the degree-two part of the Torelli group's associated graded.
method We use algebraic topology and group theory to analyze the structure of the degree-two part of the Torelli group's associated graded.
result The abelian group Γ2I/Γ3IΓ_2 \mathcal{I} / Γ_3 \mathcal{I} is torsion-free and described as a lattice in a rational vector space.

Defines and computes geometric pairings for discrete groups using Baum-Connes assembly map.

problem Defining and computing geometric pairings for discrete countable groups.
method Constructs explicit morphisms and the Chern-Baum-Connes assembly map.
result Explicit formulation of a Chern-Connes pairing with the periodic cyclic cohomology of the group algebra.

A generalized Stiefel manifold is the manifold of orthonormal frames in a vector space with a non-degenerated bilinear or hermitian form. In this article, the Isometry group of the generalized Stiefel manifolds are computed at least up to connected components in an explicit form. This is done by considering a natural n…

2019-01-30abs ↗pdf ↗

The affine diffeomorphism group Aff(S,q)\mathrm{Aff}(S,q) of a half-translation surface (S,q)(S,q) comprise the self-diffeomorphisms with constant differential away from the singularities. This group coincides with the stabiliser of the associated Teichmüller disc under the action of the mapping class group on Teichmüller space…

2019-12-13abs ↗pdf ↗

Residual finiteness is known to be an important property of groups appearing in combinatorial group theory and low dimensional topology. In a recent work [2] residual finiteness of quandles was introduced, and it was proved that free quandles and knot quandles are residually finite. In this paper, we extend these resul…

2019-02-08abs ↗pdf ↗

We give explicit descriptions of the adjoint group of the Coxeter quandle QWQ_W associated with an arbitrary Coxeter group WW. The adjoint group of QWQ_W turns out to be an intermediate group between WW and the corresponding Artin group AWA_W, and fits into a central extension of WW by a finitely generated free abel…

2017-02-23abs ↗pdf ↗