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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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52105157209 · May 202619922001200920172026
48 results for monotonic mappings

We introduce large scale analogues of topological monotone and light maps, which we call coarsely monotone and coarsely light maps respectively. We show that these two classes of maps constitute a factorization system on the coarse category. We also show how coarsely monotone maps arise from a reflection in a similar w…

2016-07-08abs ↗pdf ↗

In [S. Basu, A. Gabrielov, N. Vorobjov, Semi-monotone sets. arXiv:1004.5047v2 (2011)] we defined semi-monotone sets, as open bounded sets, definable in an o-minimal structure over the reals, and having connected intersections with all translated coordinate cones in R^n. In this paper we develop this theory further by d…

2012-01-02abs ↗pdf ↗

This work clarifies different transport map constructions and their causal interpretations.

problem Identifying distinct transport map constructions and their equivalence.
method Comparative analysis of three transport map constructions: cyclically monotone, quantile-preserving, and triangular monotone.
result Conditions for equivalence of different transport map constructions.

New method calibrates neural network predictions for better reliability.

problem Improper probability estimates from deep networks leading to unreliable predictions.
method Proposes a constrained optimization approach for a monotonic calibration map.
result Achieves state-of-the-art performance across various datasets and models.

The paper derives Liouville theorems for various generalized maps on Riemannian manifolds.

problem Deriving Liouville theorems for generalized maps on Riemannian manifolds.
method Using conservation laws and monotonicity formulas, the paper derives Liouville theorems for different types of maps under various conditions.
result The paper establishes Liouville theorems for several types of generalized maps, including φφ-FF harmonic maps, φφ-FF symphonic maps, and φφ-FF-VV-harmonic maps.

Holomorphic maps are a special case of Hermitian pluriharmonic maps between almost Hermitian manifolds.

problem Characterizing maps between almost Hermitian manifolds.
method Introducing Hermitian pluriharmonic maps and proving their properties.
result Holomorphic or anti-holomorphic maps are Hermitian pluriharmonic.

Characterizes continuity of monotone functionals in mixed topology.

problem Continuity of monotone functionals in mixed topology.
method Characterization through lower semicontinuity and dual representations.
result Continuity in mixed topology is equivalent to dual representation in terms of countably additive measures.

New framework for learning KR maps from data, ensuring stable generalization.

problem Learning monotone triangular transport maps efficiently and accurately.
method General framework using invertible transformations of smooth functions, ensuring no spurious local minima.
result Unique global minimizer corresponds to the KR map under certain conditions.

New method for conditional sampling using M-GANs, likely-free inference.

problem Conditional sampling of probability measures.
method Developed a novel computational approach called M-GANs based on block triangular transport.
result Accurate sampling of conditional measures in various applications.

We investigate monotonicity properties of pp-harmonic vector bundle-valued kk-forms by studying the energy-momentum tensor associated with such a form. As a consequence, we obtain a unified proof of the monotonicity formulæ for pp-harmonic maps and Yang-Mills connections, proving a monotonicity formula for pp-Yang-…

2015-06-10abs ↗pdf ↗

The paper studies critical points of horizontal energy functional in Riemannian foliations.

problem Analyzing critical points of horizontal energy functional in Riemannian foliations.
method Utilizing stress-energy tensor, establishing monotonicity formulas, and Jin-type theorems.
result Established monotonicity formulas for horizontally harmonic maps and transversally harmonic maps.

We show that if PP is a quadratic polynomial with a fixed Cremer point and Julia set JJ, then for any monotone map $\ph:J\to A$ from JJ onto a locally connected continuum AA, AA is a single point.

2008-09-06abs ↗pdf ↗

We give a new approach to the infinitesimal structure of Lipschitz maps into L^1. As a first application, we give an alternative proof of the main theorem from an earlier paper, that the Heisenberg group does not admit a bi-Lipschitz embedding in L^1. The proof uses the metric differentiation theorem of Pauls and the c…

2009-07-19abs ↗pdf ↗

We derive some restrictions on the topology of a monotone Lagrangian submanifold LCnL\subset\mathbf{C}^n by making observations about the topology of the moduli space of Maslov 2 holomorphic discs with boundary on LL and then using Damian's theorem which gives conditions under which the evaluation map from this moduli …

2011-10-05abs ↗pdf ↗

Holonomy groups of metric connections converge in a monotonic way.

problem Monotonicity of holonomy groups under convergence of metric connections.
method Proving the monotonicity of holonomy groups for sequences of metric connections converging in C0C^0.
result The holonomy group of the limit connection is contained in the holonomy group of the initial connections.

We derive a monotonicity formula and classify finite Morse index solutions (positive or sign-changing, radial or not) to the following triharmonic Lane-Emden equation: \begin{equation}\nonumber (-Δ)^3 u=|u|^{p-1}u \hbox{ in } \mathbb{R}^n, \end{equation} where pp is below the Joseph-Lundgren exponent. As a byproduct w…

2016-07-16abs ↗pdf ↗

Study on regularity of optimal transport maps on convex domains with quadratic cost.

problem Regularity of optimal transport maps between convex domains with quadratic cost.
method Analysis of CαC^α-densities and C1,αC^{1, α} boundary conditions, monotonicity formula for optimal transport maps.
result Proves C1,1εC^{1, 1-\varepsilon}-regularity for nondegenerate CαC^α-densities and C2,αC^{2, α}-regularity for C1,αC^{1, α} boundary.

Gradient descent dynamics in quadratic regression models are analyzed, revealing five phases: monotonic, catapult, periodic, chaotic, and divergent.

problem Analyzing the dynamics of gradient descent in quadratic regression models.
method Fine-grained bifurcation analysis of gradient descent dynamics using a cubic map parameterized by the step-size.
result Gradient descent dynamics in quadratic regression models exhibit five distinct phases: monotonic, catapult, periodic, chaotic, and divergent.

We study the J-flow on the toric manifolds, through study the transition map between the moment maps induced by two Kähler metrics, which is a diffeomorphism between polytopes. This is similar to the work of Fang-Lai, under the assumption of Calabi symmetry, they study the monotone map between two intervals. We get a p…

2014-07-04abs ↗pdf ↗

Develops Lie-theoretic perspective on Hitchin's equations for cyclic G-Higgs bundles.

problem Analytic and geometric properties of harmonic maps.
method Lie-theoretic perspective on Hitchin's equations for cyclic G-Higgs bundles.
result Proves Dai-Li's conjecture on the monotonicity of the energy density and negative curvature conjecture for Coxeter cyclic G-Higgs bundles.

In this note we discuss how several results characterizing the qualitative behavior of solutions to the nonlinear Poisson equation can be generalized to harmonic maps with potential between complete Riemannian manifolds. This includes gradient estimates, monotonicity formulas and Liouville theorems under curvature and …

2016-09-23abs ↗pdf ↗

New method uses neural maps to efficiently sample lattice QCD distributions.

problem Challenges in sampling Boltzmann distributions of lattice field theories.
method Sparse triangular transport maps exploiting conditional independence structure of lattice graphs.
result Sparse triangular maps achieve efficient sampling with linear time complexity in lattice size.

Monotone aggregation of dependent random vectors has an absolutely continuous distribution under certain conditions.

problem Monotone aggregation of dependent random vectors
method Coordinatewise monotonicity and uniform lower-increment conditions
result One-dimensional push-forwards of dependent random vectors have an absolutely continuous distribution

We define relative Floer theoretic invariants arising from 'quilted pseudo-holomorphic surfaces': Collections of pseudoholomorphic maps to various target spaces with 'seam conditions' in Lagrangian correspondences. As application we construct a morphism on quantum homology associated to any monotone Lagrangian correspo…

2009-05-09abs ↗pdf ↗

This paper constructs a continuous decomposition of the Sierpiński curve into acyclic continua one of which is an arc. This decomposition is then used to construct another continuous decomposition of the Sierpiński curve. The resulting decomposition space is homeomorphic to the continuum obtained from taking the Sierpi…

1999-08-10abs ↗pdf ↗

In this article, we investigate the cobordism maps on periodic Floer homology (PFH). In the first part of the paper, we define the cobordism maps on PFH via Seiberg Witten theory as well as the isomorphism between PFH and Seiberg Witten cohomology. Furthermore, we show that the maps satisfy the holomorphic curve axiom.…

2017-09-13abs ↗pdf ↗

The paper studies geometric properties of Φ(3)Φ_{(3)}-harmonic maps and proves Liouville type results.

problem Exploring geometric properties of Φ(3)Φ_{(3)}-harmonic maps.
method Unified geometric analytic methods, first and second variation formulas, stress-energy tensor, conservation law, monotonicity formula, asymptotic assumption, extrinsic average variational method.
result Proves Liouville type results for Φ(3)Φ_{(3)}-harmonic maps.

Fixed points of nonnegative neural networks are analyzed using fixed point theory.

problem Analyzing fixed points in nonnegative neural networks.
method Fixed point theory, nonlinear Perron-Frobenius theory, monotonic and scalable mappings.
result Conditions for the existence of fixed points in nonnegative neural networks are provided.