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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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4387130173 · May 202619922001200920172026
48 results for shift algebras

The paper explores new algebraic structures and morphisms in graded settings.

problem Understanding new algebraic structures and morphisms in graded settings.
method Introducing and analyzing LL_{\infty}-, PP_{\infty}-, and SS_{\infty}-algebras, and thick morphisms in a Z2imesZ\mathbb{Z}_2 imes \mathbb{Z}-graded context.
result Shifted SS_{\infty}-thick morphisms induce LL_{\infty}-morphisms of shifted SS_{\infty}-structures.

Explicit BCH series radii found for special Banach-Malcev shift algebras.

problem Finding convergence radii for BCH series in specific algebraic structures.
method Established explicit convergence radii using continuity estimates and algebraic properties.
result Explicit formula for convergence radii derived and validated for various shift algebras.

Given a bundle of chain complexes, the algebra of functions on its shifted cotangent bundle has a natural structure of a shifted Poisson algebra. We show that if two such bundles are homotopy equivalent, the corresponding Poisson algebras are homotopy equivalent. We apply this result to LL_\infty-algebroids to show th…

2018-03-20abs ↗pdf ↗

We study the shifted analogue of the "Lie--Poisson" construction for LL_\infty algebroids and we prove that any LL_\infty algebroid naturally gives rise to shifted derived Poisson manifolds. We also investigate derived Poisson structures from a purely algebraic perspective and, in particular, we establish a homotopy …

2017-12-02abs ↗pdf ↗

GS-B3^3SE improves label shift estimation by smoothing priors on a graph.

problem Label shift adaptation when source and target distributions share conditional but not marginal probabilities.
method Graph-Smoothed Bayesian Black-Box Shift Estimator (GS-B3^3SE) places Laplacian-Gaussian priors on log-priors and confusion-matrix columns tied by a label-similarity graph.
result GS-B3^3SE produces a tractable posterior with HMC or Newton-CG schemes, proving identifiability, contraction, and robustness.

Shifted symplectic Lie and LL_\infty algebroids model formal neighbourhoods of manifolds in shifted symplectic stacks, and serve as target spaces for twisted variants of classical AKSZ topological field theory. In this paper, we classify zero-, one- and two-shifted symplectic algebroids and their higher gauge symmetri…

2016-12-30abs ↗pdf ↗

Quantization of (-1)-shifted derived Poisson manifolds via BV-infinity operators.

problem Quantizing (1)(-1)-shifted derived Poisson manifolds.
method Using BV-infinity operators on the space of Berezinian half-densities, proving quantization via lifting of Maurer-Cartan elements.
result Quantization of (1)(-1)-shifted derived Poisson manifolds is equivalent to the vanishing of the second Poisson cohomology group.

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.

Continues work on derived manifolds and symplectic schemes, constructing virtual classes.

problem Constructing virtual fundamental classes for derived manifolds and schemes.
method Cosection localization, reduced virtual fundamental classes, and applications to Donaldson-Thomas theory.
result Virtual fundamental classes for (2)(-2)-shifted symplectic derived schemes are consistent with algebraic and differential geometric constructions.

This thesis extends contact structures to differentiable stacks using line bundle-valued 1-forms.

problem Extending classical contact structures to differentiable stacks.
method Introducing 00 and +1+1-shifted contact structures on Lie groupoids, using line bundle-valued 1-forms and homotopy kernels.
result Definition and examples of 00 and +1+1-shifted contact structures on Lie groupoids.

The paper integrates quasi-Poisson manifolds into multiplicative D-valued moment maps.

problem Integrating quasi-Poisson manifolds into a broader geometric framework.
method Develops new aspects of shifted symplectic and Poisson geometry, establishing Lie-type correspondences and systematic constructions.
result Identifies multiplicative D-valued moment maps integrating quasi-Poisson manifolds, extending known constructions.

Let (M,Q)(\mathcal{M}, Q) be a dg manifold. The space of vector fields with shifted degrees (X(M)[1],LQ)(\mathcal{X}(\mathcal{M})[-1], L_Q) is a Lie algebra object in the homology category H((CM,Q)mod)\mathrm{H}((C^{\infty}_{\mathcal{M}},Q)\mathrm{-}\mathbf{mod}) of dg modules over (M,Q)(\mathcal{M},Q), the Atiyah class αMα_{\mathcal{M}} being …

2019-11-04abs ↗pdf ↗

The paper establishes a Lagrangian correspondence linking different geometric structures on complex varieties.

problem Identifying relationships between different geometric structures on complex varieties.
method Using perfect complexes and shifted symplectic geometries, the paper establishes a Lagrangian correspondence.
result A Lagrangian correspondence between shifted symplectic geometries of flat and Higgs perfect complexes.

The purpose of this paper is to investigate shifted (+1)(+1) Poisson structures in context of differential geometry. The relevant notion is shifted (+1)(+1) Poisson structures on differentiable stacks. More precisely, we develop the notion of Morita equivalence of quasi-Poisson groupoids. Thus isomorphism classes of (+1)(+1)

2018-03-18abs ↗pdf ↗

This work explores symplectic structures on graded manifolds and higher Lie groupoids.

problem Understanding symplectic structures on graded manifolds and their global counterparts.
method Introduction and study of graded manifolds, symplectic Q-manifolds, higher Lie groupoids, and their symplectic structures.
result Developed a graded analogue of Weinstein's tubular neighborhood theorem and explored its applications.

We use the heat flow on the loop space of a closed Riemannian manifold to construct an algebraic chain complex. The chain groups are generated by perturbed closed geodesics. The boundary operator is defined in the spirit of Floer theory by counting, modulo time shift, heat flow trajectories that converge asymptotically…

2010-03-23abs ↗pdf ↗

We prove that the Grothendieck-Springer simultaneous resolution viewed as a correspondence between the adjoint quotient of a Lie algebra and its maximal torus is Lagrangian in the sense of shifted symplectic structures. As Hamiltonian spaces can be interpreted as Lagrangians in the adjoint quotient, this allows one to …

2014-11-11abs ↗pdf ↗

Ideas of Rozansky and Witten, as developed by Kapranov, show that a complex symplectic manifold X gives rise to Vassiliev weight systems. In this paper we study these weight systems by using D(X), the derived category of coherent sheaves on X. The main idea (stated here a little imprecisely) is that D(X) is the categor…

2006-02-28abs ↗pdf ↗

Study tackles distribution shift in combinatorial settings using matrix completion techniques.

problem Tackling distribution shift in combinatorial settings with rigorous statistical guarantees.
method Develops novel algorithms and theoretical results for extrapolating to test distributions not covered in training.
result Achieves bilinear combinatorial extrapolation under gradual spectral decay in high-dimensional data.

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 ↗

Formula for colored invariants of torus knots linked to Wr\mathcal{W}_r algebras.

problem Calculating colored slr\mathfrak{sl}_r invariants of torus knots.
method Generalizing Morton's work, formula derivation for invariants and their limits to Wr\mathcal{W}_r characters.
result Limits of invariants are essentially characters of Wr\mathcal{W}_r algebras, modular up to factors.

A new mathematical approach to general covariance using stacks and Lie algebras.

problem Understanding general covariance in curved spacetime field theories.
method Using stacks and groupoids to study the quotient of metrics modulo diffeomorphism, and analyzing the tangent complex and Lie algebra actions.
result Recovering a novel expression for the stress-energy tensor in scalar field theories.

New complex surfaces found with interesting geometric properties.

problem Understanding the structure of shift loci of degree d polynomials.
method Explicit description of shift loci as complex spaces over a contractible building, using combinatorial and algebraic methods.
result Shift loci have the homotopy type of CW complexes and are K(π,1)K(\pi,1) for d=3,4d=3,4.

Area-preserving diffeomorphisms of a 2-disc can be regarded as time-1 maps of (non-autonomous) Hamiltonian flows on solid tori, periodic flow-lines of which define braid (conjugacy) classes, up to full twists. We examine the dynamics relative to such braid classes and define a braid Floer homology. This refinement of t…

2009-10-04abs ↗pdf ↗

Unified framework for observables in n-plectic geometry.

problem Quantization of extended objects in higher geometric contexts.
method Develops a semi-simplicial set model for observables, using a Grassmann variable to encode submanifold codimensions.
result Establishes a categorified pre-n-Hilbert space and a quantization scheme matching multisymplectic geometry.

In this paper, we formulate a new local move on virtual knot diagram, called arc shift move. Further, we extend it to another local move called region arc shift defined on a region of a virtual knot diagram. We establish that these arc shift and region arc shift moves are unknotting operations by showing that any virtu…

2018-08-13abs ↗pdf ↗

In this paper we use fractal geometry to investigate boundary aspects of the first homology group for finite coverings of the modular surface. We obtain a complete description of algebraically invisible parts of this homology group. More precisely, we first show that for any modular subgroup the geodesic forward dynami…

2006-11-02abs ↗pdf ↗

Quantum theory reinterprets financial pricing by focusing on observable price transitions.

problem Traditional financial models rely on latent variables; this paper proposes a new observable approach.
method Shift operators, spectral calculus, and Lindblad semigroups are used to define observable frequency operators and convolution generators.
result The framework leads to a nonlocal pricing equation that converges to classical Black-Scholes-Merton under small mesh limits.

Improves VQAs by balancing classical and quantum training resources.

problem Challenges in trainability and resource costs of VQAs on quantum hardware.
method Adopting HELIA Ansatz and combining classical and quantum methods for gradient estimation and training.
result Achieves higher accuracy and success rates in VQE and improved test accuracy in quantum phase classification.