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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.

168,694 papers · 148 categories

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24 results for irrationality

This paper makes certain observations regarding some conjectures of Milnor and Ramakrishnan in hyperbolic geometry and algebraic K-theory. As a consequence of our observations, we obtain new results and conjectures regarding the rationality and irrationality of Chern-Simons invariants of hyperbolic 3-manifolds.

1997-12-04abs ↗pdf ↗

It is believed by the majority today that the efficient market hypothesis is imperfect because of market irrationality. Using the physical concepts and mathematical structures of quantum mechanics, we construct an econophysics framework for the stock market, based on which we analogously map massive numbers of single s…

2014-05-13abs ↗pdf ↗

New findings on minimal isometric immersions of flat n-tori into spheres.

problem Conditions for minimal isometric immersions of flat n-tori into spheres.
method Analyzes rationality conditions and derives upper bounds for algebraic irrationality degree.
result Upper bound for algebraic irrationality degree of minimal isometric immersions is sharp and equals 4 for n=3.

We study spectral gaps of cellular differentials for finite cyclic coverings of knot complements. Their asymptotics can be expressed in terms of irrationality exponents associated with ratios of logarithms of algebraic numbers determined by the first two Alexander polynomials. From this point of view it is natural to s…

2016-07-13abs ↗pdf ↗

The paper finds geodesics on specific Finsler spheres with unique properties.

problem Identifying geodesics on Finsler spheres with given curvature constraints.
method Analyzes Finsler 44-spheres with specific curvature conditions to determine geodesic properties.
result Proves existence of at least four prime closed geodesics under certain conditions.

Study extends gauge-theoretic invariant to higher-dimensional Kahler surfaces and calculates homotopy groups.

problem Calculate higher homotopy groups of symplectic mapping spaces on modified Kahler surfaces.
method Apply deformation of complex objects and gauge-theoretic techniques to closed Kahler surfaces.
result Show that even-dimensional higher homotopy groups of symplectic mapping spaces are infinitely generated.

We compute both natural and smooth models for the SL2(C)SL_2(\mathbb C) character varieties of the two component double twist links, an infinite family of two-bridge links indexed as J(k,l)J(k,l). For each J(k,l)J(k,l), the component(s) of the character variety containing characters of irreducible representations are birational to…

2014-11-04abs ↗pdf ↗

Study uses sentiment analysis to predict implied volatility surface, improving prediction accuracy.

problem Improving prediction accuracy of implied volatility surface.
method Constructed daily high-frequency sentiment data, used VAR method, deep learning (BERT, LSTM), FFT, EMD for sentiment decomposition.
result High-frequency sentiment correlates with ATM options' implied volatility, low-frequency with DOTM options.

We characterize compact eight-manifolds M which arise as internal spaces in N=1 flux compactifications of M-theory down to AdS3 using the theory of foliations, for the case when the internal part of the supersymmetry generator is everywhere non-chiral. We prove that specifying such a supersymmetric background is equiva…

2014-11-12abs ↗pdf ↗

Formula for heat coefficients of curved conic singularities derived from Riemannian metrics.

problem Calculating heat coefficients for surfaces with curved conic singularities.
method Explicit formula derivation for coefficient b1/2(C)b_{1/2}(C) under rotationally invariant metrics near conical singularities.
result The coefficient b1/2(C)b_{1/2}(C) varies irrationally under constant rescalings near the cone point, contrasting with other coefficients.

The paper tackles learning from imperfect human feedback, especially in dueling bandit problems.

problem Learning from human feedback that can be irrational or imperfect.
method Developed a Robustified Stochastic Mirror Descent for Imperfect Dueling (RoSMID) algorithm.
result Achieved nearly optimal regret for dueling bandit problems under imperfect human feedback.

SPPO optimizes language model alignment by treating preferences as a game and achieving state-of-the-art performance.

problem Capturing intransitivity and irrationality in human preferences for accurate language model alignment.
method Self-play-based approach to identify Nash equilibrium policy through iterative policy updates.
result SPPO achieves state-of-the-art win-rate of 28.53% on AlpacaEval 2.0 without external supervision.

Let ωω be a Morse form on a manifold MM. Let p:M^Mp:\hat M\to M be a regular covering with structure group GG, such that p([ω])=0p^*([ω])=0. Let ξ:GRξ:G\to\mathbf{R} be the corresponding period homomorphism. Denote by Λ^ξ{\hat Λ}_ξ the Novikov completion of the group ring ZG\mathbf{Z} G. Choose a transverse ωω-gradient vv. Co…

2019-12-20abs ↗pdf ↗