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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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74147221294 · Jun 202019922001200920172026
48 results for $\mathfrak{sl}_2(\mathbb{C})$ connections

The paper connects isomonodromic and isospectral deformations for sl2(C)\mathfrak{sl}_2(\mathbb{C}) connections.

problem Connecting isomonodromic and isospectral deformations for sl2(C)\mathfrak{sl}_2(\mathbb{C}) connections.
method Explicitly constructing Lax pairs and Darboux coordinates to bridge isomonodromic and isospectral deformations.
result Explicit change of Darboux coordinates to match spectral invariants, solving an open issue.

Defines and parametrizes sl(2)\mathfrak{sl}(2)-type singular fibres in symplectic and odd orthogonal Hitchin systems.

problem Characterizing and understanding singular fibres in Hitchin systems.
method Stratification by semi-abelian spectral data, study of irreducible components, global description of degenerations.
result Extension of Langlands duality to sl(2)\mathfrak{sl}(2)-type Hitchin fibres.

Study Poisson cohomology and linearize Lie algebra structures.

problem Linearize Poisson structures on sl2(C)\mathfrak{sl}_2(\mathbb{C}).
method Calculate Poisson cohomology, construct homotopy operators, develop Nash-Moser method.
result Show that Poisson structures linearizable at zero are flat.

The purpose of this paper is to provide an octonionic description of the Lie group SL(2,O)SL(2,{\mathbb O}). The main result states that it can be obtained as a free group generated by invertible and determinant preserving transformations from h2(O)\mathfrak{h}_2({\mathbb O}) onto itself. An interesting characterization is giv…

2015-04-15abs ↗pdf ↗

We give a purely combinatorial formula for evaluating closed decorated foams. Our evaluation gives an integral polynomial and is directly connected to an integral equivariant version of the slN\mathfrak{sl}_N link homology categorifying the slN\mathfrak{sl}_N link polynomial. We also provide connections to the equivarian…

2017-02-14abs ↗pdf ↗

Quantizes Chern-Simons invariant for tangle exteriors.

problem Geometric quantization of Chern-Simons invariant for tangles.
method Defining a sequence of invariants ZNψ\mathcal{Z}_{N}^ψ using modules over quantum sl2\mathfrak{sl}_{2} and holonomy RR-matrices.
result Directly recovers Chern-Simons invariant when N=1N = 1.

It is known that complex constant mean curvature ({\sc CMC} for short) immersions in C3\mathbb C^3 are natural complexifications of {\sc CMC}-immersions in R3\mathbb R^3. In this paper, conversely we consider {\it real form surfaces} of a complex {\sc CMC}-immersion, which are defined from real forms of the twisted $\m…

2012-03-08abs ↗pdf ↗

Quantum invariants derived from Uq(sl2)\mathcal{U}_q(\mathfrak{sl}_2) link holonomy.

problem Quantum invariants of links and their relations.
method Using quantum groups and Schur-Weyl duality, constructing quantum holonomy invariants.
result Quantum invariants of links can be derived from Uq(sl2)\mathcal{U}_q(\mathfrak{sl}_2) representations.

We study the monodromy of meromorphic cyclic SL(n,C)\mathrm{SL}(n,\mathbb{C})-opers on the Riemann sphere with a single pole. We prove that the monodromy map, sending such an oper to its Stokes data, is an immersion in the case where the order of the pole is a multiple of nn. To do this, we develop a method based on the wo…

2019-06-10abs ↗pdf ↗

Study cohomology spaces of sl(2) acting on n-ary differential operators.

problem Computing cohomology spaces for sl(2) action on n-ary differential operators.
method Analyzes polynomial μ-densities as sl(2) modules and computes cohomological spaces H^2.
result Computed cohomological spaces H^2 of sl(2) on n-ary differential operators.

Characterizes flag geometries for Hitchin representations in SL3(R).

problem Understanding flag geometries associated with Hitchin representations in SL3(R).
method Geometric characterization based on invariant foliations and refraction flows.
result Constructs refraction flows for positive roots in general sl_n(R), with highest root flows being C^1+α.

In this paper we use Kuperberg's sl3\mathfrak{sl}_3-webs and Khovanov's sl3\mathfrak{sl}_3-foams to define a new algebra KSK^S, which we call the sl3\mathfrak{sl}_3-web algebra. It is the sl3\mathfrak{sl}_3 analogue of Khovanov's arc algebra. We prove that KSK^S is a graded symmetric Frobenius algebra. Furthermore, we cate…

2012-06-11abs ↗pdf ↗

The paper studies geometric structures on SL(n,R) induced by the Killing form.

problem Understanding geometric structures on SL(n,R) induced by the Killing form.
method Constructing manifolds, studying Poisson-commutation relations, and solving Hamiltonian systems.
result Explicit solutions of Hamiltonian systems for n=2.

New coordinates for SL3-web graphs on surfaces defined by Fock-Goncharov.

problem Characterizing functions on SL3-character varieties of surfaces.
method Introduced tropical Fock-Goncharov coordinates based on Knutson-Tao rhombus inequalities and congruence conditions.
result Tropical coordinates naturally index the commutative algebra of functions on SL3-character varieties.

Holomorphic connections found on Riemann surfaces with Fuchsian monodromy.

problem Existence of holomorphic connections with Fuchsian monodromy on Riemann surfaces.
method Construction of compact Riemann surfaces with specific holomorphic vector bundles and connections.
result Existence of holomorphic connections with maximal Euler class and Fuchsian monodromy.

The paper studies deformations and confluences of singularities in meromorphic connections and quadratic differentials.

problem Understanding singularities and deformations in meromorphic connections and quadratic differentials.
method Local formal invariants and jets of meromorphic quadratic differentials, universal isomonodromic deformation, unfolded Stokes phenomenon, horizontal and vertical foliations.
result Establishes a correspondence between local formal invariants and jets of meromorphic quadratic differentials, describing parameter spaces and moduli spaces.

We prove a functorial correspondence between a category of logarithmic sl2\mathfrak{sl}_2-connections on a curve XX with fixed generic residues and a category of abelian logarithmic connections on an appropriate spectral double cover π:ΣXπ: Σ\to X. The proof is by constructing a pair of inverse functors $π^{\text{ab}}, π…

2019-02-09abs ↗pdf ↗

Geometrically describes hyperbolic structures on link complements using quantum groups.

problem Describing hyperbolic structures on link complements algebraically.
method Uses octahedral decomposition and Kashaev-Reshetikhin's braiding on quantum group Uξ(sl2)\mathcal{U}_ξ(\mathfrak{sl}_2).
result Shows how to interpret geometrically the algebraic gluing equations for hyperbolic structures.

Frobenius homomorphisms for SL_n skein modules generalize knot theory results.

problem Quantum group representations and skein theory for SL_n character varieties.
method Representation theory of quantum groups and skein theory.
result Frobenius homomorphisms for stated SL_n skein modules are defined and their properties are explored.

Study compares two pseudo-Kähler structures on a specific mathematical component.

problem Comparing two pseudo-Kähler structures on the SL(3,R)\mathrm{SL}(3,\mathbb{R})-Hitchin component.
method Examined Rungi-Tamburelli's ωfω_f and Goldman's ωGω_G forms, and aligned Killing forms.
result Rungi-Tamburelli's semi-pseudo-Kähler structure is non-degenerate and matches another structure after normalization.

New invariants from quantum group theory for hyperbolic 3-manifolds.

problem Computing invariants for hyperbolic 3-manifolds with boundary.
method Using modular doubles of quantum sl(2;R)\mathfrak{sl}(2;\mathbb R) and 6j6j-symbols.
result Invariants decay exponentially with hyperbolic volume and 1-loop terms.

New method calculates Chern-Simons volume for 3-manifolds with surgery diagrams.

problem Computing Chern-Simons volume for 3-manifolds with torus boundaries and cusps.
method Direct computation from surgery diagrams using a log-decoration and quantum group coordinates.
result Direct computation of Chern-Simons volume for 3-manifolds with torus boundaries and cusps.

A new invariant for links generalizes Alexander polynomial for sl_3.

problem Defining a non-abelian generalization of the Alexander polynomial.
method Using quantum sl3\mathfrak{sl}_3 representations and Laurent polynomials.
result Established a direct relation between Δsl3Δ_{\mathfrak{sl}_3} and the Alexander polynomial.

Study unbounded sl3\mathfrak{sl}_3-laminations around punctures.

problem Classify and understand structures of sl3\mathfrak{sl}_3-laminations at punctures.
method Relate to root data, classify signed webs, describe tropicalization, clarify relationships with other approaches.
result Clarify the relationship between sl3\mathfrak{sl}_3-laminations and other approaches.

We study the Chabauty compactification of two families of closed subgroups of SL(n,Qp)SL(n,\mathbb{Q}_p). The first family is the set of all parahoric subgroups of SL(n,Qp)SL(n,\mathbb{Q}_p). Although the Chabauty compactification of parahoric subgroups is well studied, we give a different and more geometric proof using various Le…

2017-11-13abs ↗pdf ↗

We prove a general extrinsic rigidity theorem for homogeneous varieties in CPN\mathbb{CP}^N. The theorem is used to show that the adjoint variety of a complex simple Lie algebra g\mathfrak{g} (the unique minimal G orbit in Pg\mathbb{P}\mathfrak{g}) is extrinsically rigid to third order. In contrast, we show that the ad…

2007-07-23abs ↗pdf ↗

The paper calculates colored Jones polynomials for specific link configurations.

problem Computing colored Jones polynomials in general is difficult, but the paper provides explicit formulas.
method Uses Kuperberg's A2A_2 skein relation and one-row Young diagrams.
result Derives the sl3\mathfrak{sl}_3 tail of (2,2m)(2,2m)-torus links and false theta series.

Researchers calculate colored Jones polynomials for pretzel links using Kuperberg's theory.

problem Calculating colored Jones polynomials for general oriented links is difficult.
method Using Kuperberg's linear skein theory, they focus on one-row polynomials for pretzel links.
result Existence of tails for specific pretzel knots' Jones polynomials is shown.

Link homology compared with geometric link invariants using Bott-Samelson varieties.

problem Comparing different link homology theories with geometric link invariants.
method Using Khovanov-Rozansky homology and equivariant cohomology applied to Bott-Samelson varieties.
result Equivariant integral sl(n) link homology with specialized or universal potential.

Study on holonomy of Obata connection on specific nilmanifolds.

problem Characterizing holonomy of Obata connection on 2-step hypercomplex nilmanifolds.
method Explicitly computed curvature tensor to determine conditions for flatness.
result Holonomy algebra of Obata connection is always abelian subalgebra of sl(n,H)\mathfrak{sl}(n, \mathbb{H}).