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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.

168,657 papers · 148 categories

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48 results for infinite generation

Veech groups uniformize Teichmüller geodesic curves in Riemann moduli space. Recently, examples of infinitely generated Veech groups have been given. We show that these can even have infinitely many cusps and infinitely many infinite ends. We further show that examples exist for which each direction of an infinite end …

2004-10-06abs ↗pdf ↗

This paper is one step toward infinite energy gauge theory and the geometry of infinite dimensional moduli spaces. We generalize a gluing construction in the usual Yang-Mills gauge theory to an ``infinite energy'' situation. We show that we can glue an infinite number of instantons, and that the resulting instantons ha…

2005-08-01abs ↗pdf ↗

In this preliminary work, we study the generalization properties of infinite ensembles of infinitely-wide neural networks. Amazingly, this model family admits tractable calculations for many information-theoretic quantities. We report analytical and empirical investigations in the search for signals that correlate with…

2019-11-20abs ↗pdf ↗

Study infinite genus surfaces and Schottky groups for uniformization.

problem Investigate infinite genus surfaces and Schottky groups for uniformization.
method Definitions and proofs for infinite genus surfaces and Schottky groups, showing uniformization by Schottky groups.
result Infinite genus surfaces and handlebodies can be topologically and quasiconformally uniformized by Schottky groups.

In this paper, for a non compact and orientable surface SS been either: the Infinite Loch Ness monster, the Cantor tree and the Blooming Cantor tree, we construct explicitly an infinitely generated Fuchsian group Γ<PSL(2,R)Γ<PSL(2,\mathbb{R}), such that the quotient H/Γ\mathbb{H}/Γ is a hyperbolic surface homeomorphic to SS.

2018-06-12abs ↗pdf ↗

We define and study analogs of curve graphs for infinite type surfaces. Our definitions use the geometry of a fixed surface and vertices of our graphs are infinite multicurves which are bounded in both a geometric and a topological sense. We show that the graphs we construct are generally connected, infinite diameter a…

2014-10-12abs ↗pdf ↗

We extend rectified flow to infinite-dimensional Hilbert space.

problem Extending rectified flow to infinite-dimensional spaces.
method Established a rigorous functional formulation using the superposition principle for continuity equations.
result Demonstrated superior performance compared to existing models.

Big mapping class groups of infinite type surfaces have infinite asymptotic dimension.

problem Understanding asymptotic dimension of big mapping class groups of infinite type surfaces.
method Analyzing big mapping class groups with coarsely bounded generating sets and essential shifts.
result Big mapping class groups of infinite type surfaces have infinite asymptotic dimension.

VC dimensions of group CNNs are infinite for certain kernels and groups.

problem Estimating the generalization capacity of group convolutional neural networks.
method Identifying precise VC dimension estimates for simple sets of group CNNs.
result Two-parameter families of convolutional neural networks have an infinite VC dimension for infinite groups and certain kernels.

Infinite-dimensional SBDMs improve image generation across multiple resolutions.

problem Efficient image generation at high resolutions and across different levels.
method Developed SBDMs in infinite-dimensional setting, using trace class operators and operator networks.
result Improved efficiency and generalization across resolution levels.

The paper explores non-amenability in infinite-type surfaces and graphs.

problem Determining non-amenability in mapping class groups of infinite-type surfaces and graphs.
method Analyzes mapping class groups of infinite-type surfaces and graphs, provides examples and exhibits classes of groups.
result Completely determines non-amenability of mapping class groups of infinite-type surfaces and graphs.

Paper introduces infinite-dimensional generative models using Doob's h-transform.

problem Defining generative models in infinite dimensions.
method Using Doob's h-transform to force a reference diffusion towards a target distribution.
result The forced process can be approximated by minimising a score-matching objective.

Multitwists cannot generate all compactly supported mapping class groups on infinite-type surfaces.

problem Generating compactly supported mapping class groups on infinite-type surfaces.
method Analyzing closure of compactly supported mapping class groups and their relation to multitwists.
result Closure of compactly supported mapping class groups is not generated by multitwists.

We generalize Bonahon's characterization of geometrically infinite torsion-free discrete subgroups of PSL(2, C\mathbb{C}) to geometrically infinite discrete isometry subgroups in the case of rank 1 symmetric spaces, and, under the assumption of bounded torsion, to the case of negatively pinched Hadamard manifolds. Eve…

2018-04-26abs ↗pdf ↗

In this paper we study the rigidity of infinite volume 3-manifolds with sectional curvature b2K1-b^2\le K\le -1 and finitely generated fundamental group. In-particular, we generalize the Sullivan's quasi-conformal rigidity for finitely generated fundamental group with empty dissipative set to negative variable curvature …

2002-11-28abs ↗pdf ↗

We show that the limiting Khovanov chain complex of any infinite positive braid categorifies the Jones-Wenzl projector. This result extends Lev Rozansky's categorification of the Jones-Wenzl projectors using the limiting complex of infinite torus braids. We also show a similar result for the limiting Lipshitz-Sarkar-Kh…

2016-10-14abs ↗pdf ↗

Study of endperiodic maps on infinite graphs, proving homotopy and eigenvalue properties.

problem Understanding endperiodic maps on infinite graphs with finitely many ends.
method Adapting relative train track maps and combinatorial techniques to infinite type setting.
result Any generalized endperiodic map is homotopic to a relative train track map.

Suppose that X,XX,X' are simply-connected closed exotic 4-manifolds. It is well-known that XX' is obtained by an order 2 cork twist of XX. We give an infinite exotic family of 4-manifolds not generated by any infinite order cork. This is the first example admitting such a condition. We prove a necessary condition of 4…

2016-09-14abs ↗pdf ↗

This paper reviews recent advances in Bayesian nonparametric techniques for constructing and performing inference in infinite hidden Markov models. We focus on variants of Bayesian nonparametric hidden Markov models that enhance a posteriori state-persistence in particular. This paper also introduces a new Bayesian non…

2014-06-30abs ↗pdf ↗

In this paper, we generalize Bonahon's characterization of geometrically infinite torsion-free discrete subgroups of PSL(2, C\mathbb{C}) to geometrically infinite discrete subgroups ΓΓ of isometries of negatively pinched Hadamard manifolds XX. We then generalize a theorem of Bishop to prove that every discrete geome…

2018-01-24abs ↗pdf ↗

This paper presents a natural extension of stagewise ranking to the the case of infinitely many items. We introduce the infinite generalized Mallows model (IGM), describe its properties and give procedures to estimate it from data. For estimation of multimodal distributions we introduce the Exponential-Blurring-Mean-Sh…

2012-06-13abs ↗pdf ↗

Smooth structures on infinite dimensional Grassmannians and non-commutative cross-ratios.

problem Smooth structures on infinite dimensional Grassmannians and non-commutative cross-ratios.
method Analyzing and expanding the notion of non-commutative cross-ratios, proving their smoothness.
result Smoothness of non-commutative cross-ratios.

Deep neural networks' infinite-width behavior approximated by Gaussian models.

problem Understanding the behavior of deep neural networks in the limit of infinite width.
method Using the Lindeberg exchange principle to approximate weights by Gaussian random variables.
result Quantitative bounds on the 2-Wasserstein distance between deep neural networks and Gaussian limits.

Accessible groups with infinitely many ends have infinitely many twisted conjugacy classes.

problem Characterizing groups with infinitely many ends and their conjugacy classes.
method Analyzing accessible groups and relatively hyperbolic groups to deduce properties.
result Groups with infinitely many ends have infinitely many twisted conjugacy classes.

We prove that rational homology of the Torelli group of genus g is infinite dimensional, provided g>6. This means that rational homology of the Torelli space of genus g>6 is infinite dimensional. The Torelli groups with marked points are also considered. In addition, we prove that rational homology of the subgroup of t…

1997-12-03abs ↗pdf ↗

The paper solves curvature problems on infinite hyperbolic surfaces.

problem Prescribed curvature flow on hyperbolic surfaces with infinite topological type.
method Introduced a prescribed curvature flow adapted to infinite cellular decompositions.
result Established well-posedness of the flow and proved convergence under certain conditions.

The paper constructs manifolds with infinite holes from a given manifold.

problem Creating manifolds with infinite holes from a given manifold.
method Constructing a sequence of (n+2)(n+2)-dimensional manifolds (Mi,gi)(M_{i} ,g_i ) with mRicgi>λ{ m Ric}_{g_i} > λ that approximate the original manifold (X,h)(X,h) and have an infinite number of connected components.
result The constructed manifolds (Xε)(X_ε) have dense boundary with an infinite number of connected components and no open subset topologically a manifold.