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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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8 results for “action-stability”

Offline Contextual Bandits with Overparameterized Modelscs.LG

Overparameterized models generalize well in offline contextual bandits, but policy-based algorithms struggle.

problem The performance gap between value-based and policy-based algorithms in offline contextual bandits with overparameterized models.

method Analysis of action-stability in objectives and formal proofs of regret bounds.

result The performance gap is due to action-stability of objectives, with value-based objectives being stable and policy-based objectives unstable.

offline contextual bandits overparameterized models action-stability regret bounds value-based algorithms

2020-06-27abs ↗pdf ↗

Equivariant Khovanov homotopy typesmath.GT

Study shows equivariant Khovanov homotopy types are equivalent.

problem Understanding equivariant structures in Khovanov homotopy types.

method Investigates group actions on homotopy coherent diagrams to prove equivalence.

result Equivariant Khovanov homotopy types are equivariantly stably homotopy equivalent.

equivariant homotopy Khovanov homology group actions stability flow categories

2024-01-31abs ↗pdf ↗

On the number of stabilizer subgroups in a finite group acting on a manifoldmath.GT

Finite p-group actions on manifolds have limited stabilizer subgroups.

problem Understanding the structure of stabilizer subgroups in group actions on manifolds.

method Bounding the index of a subgroup H in a finite p-group G acting on a compact manifold M, ensuring a controlled number of stabilizers.

result The existence of a subgroup H with a controlled index and limited stabilizers.

finite p-groups manifold actions stabilizer subgroups Ghys conjecture

2021-11-29abs ↗pdf ↗

On diagonal pluriharmonic metrics of

G

-Higgs bundlesmath.DG

Diagonal metrics solve Hermitian-Einstein equations for decomposed Higgs bundles.

problem Existence of diagonal pluriharmonic metrics in

G

-Higgs bundles.

method Analyzes Higgs bundles over compact Kähler manifolds, decomposes vector bundles, and uses torus action to relate stability and conditions.

result Necessary and sufficient conditions for the existence of diagonal metrics solving Hermitian-Einstein equations.

Higgs bundles Hermitian-Einstein equations diagonal metrics Kähler manifolds torus action

2021-11-14abs ↗pdf ↗

Taming "data-hungry" reinforcement learning? Stability in continuous state-action spacescs.LG

Novel framework proves fast RL convergence in continuous spaces.

problem Analyzing stability in continuous state-action RL.

method Introduces a novel framework to analyze stability properties of RL.

result Highlights two key stability properties and demonstrates their satisfaction in RL.

reinforcement learning continuous state-action stability fast convergence Bellman operator

2024-01-10abs ↗pdf ↗

Finiteness properties of stabilisers of oligomorphic actionsmath.GR

New findings on group actions and stabilizers of infinite sets.

problem Understanding finiteness properties of stabilizers in group actions.

method Analyzing oligomorphic actions and permutational wreath products.

result Existence of finite subsets with non-

\mathrm{FP}_\infty

stabilizers.

group actions stabilizers oligomorphic wreath products finiteness properties

2025-06-02abs ↗pdf ↗

Poisson and Symplectic structures, Hamiltonian action, momentum and reductionmath.DG

Poisson and symplectic structures discussed in lecture notes.

problem Exploring Poisson and symplectic structures in mathematics.

method Presentation of Poisson and symplectic structures, group actions, moment maps, and phase space reduction.

result Comprehensive review of Poisson and symplectic structures, group actions, and reduction.

Poisson structures symplectic structures moment maps phase space reduction group actions

2020-03-28abs ↗pdf ↗

How an action that stabilizes a bundle gerbe gives rise to a Lie group extensionmath.DG

Action stabilizing bundle gerbe leads to Lie group extension.

problem Stabilizing bundle gerbe with a Lie group action.

method Obtained abelian extension of Lie group

(g,A)

from action.

result Universal central extension of Hamiltonian diffeomorphisms.

bundle gerbe Lie group extension Fréchet-Lie group Hamiltonian diffeomorphisms symplectic surface

2024-01-24abs ↗pdf ↗