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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.

169,291 papers · 148 categories

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4488132176 · Jun 202019922001200920182026
48 results for density-equalizing maps

Develops spherical density-equalizing maps for closed surfaces.

problem Lack of methods for genus-0 closed surfaces.
method Conformal parameterization onto unit sphere, density equalization, quasi-conformal theory, harmonic energy, landmark constraints.
result Landmark-aligned spherical density-equalizing maps balancing different distortion measures.

Developed an ellipsoidal density-equalizing map for genus-0 closed surfaces.

problem Large geometric distortion when using spherical domain for genus-0 closed surfaces.
method Developed a novel method for ellipsoidal density-equalizing maps and combined with quasi-conformal maps.
result Significantly improved surface remeshing performance for genus-0 closed surfaces.

The paper proposes a method to create density-equalizing maps for open surfaces.

problem Creating flattening maps of simply-connected open surfaces with prescribed density distributions.
method Density diffusion principle and algorithm for computing flattening maps.
result Area-preserving parameterizations of simply-connected open surfaces can be easily computed.

Method flattens complex surfaces with consistent density and shape.

problem Shape deformations and local geometric distortions in density-equalizing maps for multiply-connected surfaces.
method Formulates density diffusion as a quasiconformal flow, solving an energy minimization problem involving the Beltrami coefficient to ensure bijectivity and control distortion.
result Achieves optimal parameterization of multiply-connected surfaces with bijective and controlled geometric distortions.

The paper proposes methods for volumetric parameterization of 3D solid manifolds.

problem Complex structure of solid manifolds makes conventional approaches ineffective.
method Incorporates models to preserve geometric structure, achieve density equalization, and balance distortions.
result Various 3D manifold parameterizations with different properties can be achieved.

End-to-end autonomous driving models get better uncertainty estimates.

problem Uncertainty quantification for end-to-end autonomous driving models.
method Approximate inference for implicit copula neural linear model.
result Densities for steering angle are marginally calibrated.

Both bi-harmonic map and ff-harmonic map have nice physical motivation and applications. In this paper, by combination of these two harmonic maps, we introduce and study ff-bi-harmonic maps as the critical points of the ff-bi-energy functional 12Mfτ(φ)2dvg\frac{1}{2}\int_M f|τ(φ)|^2dv_{g}. This class of maps generalizes both …

2013-05-23abs ↗pdf ↗

The paper generalizes Reeb spaces for special generic maps and lifts smooth functions.

problem Constructing lifts of smooth maps, especially Morse functions.
method Defining and generalizing quotient maps onto Reeb spaces of special generic maps and constructing lifts.
result Lifts of Morse functions can be constructed using the generalized maps.

Research explores real algebraic realization of round fold maps of codimension -1.

problem Real algebraic realization of round fold maps of codimension -1.
method Generalizes canonical projections of unit spheres to round fold maps and discusses their real algebraic realization.
result Developed new studies in real algebraic geometry focusing on round fold maps of codimension -1.

Study shows pure mapping classes can generate pseudo-Anosov mapping classes with certain conditions.

problem Understanding when pure mapping classes generate pseudo-Anosov mapping classes.
method Analyzing products of a given mapping class and powers of pure mapping classes, deriving an explicit constant.
result Almost all pure mapping classes generate pseudo-Anosov mapping classes when their powers exceed a certain constant.

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.

The paper explores unique continuation properties for polyharmonic maps between Riemannian manifolds.

problem Investigating unique continuation principles for polyharmonic maps.
method Analyzing critical points of higher order functionals to prove extensions of known results in harmonic and biharmonic cases.
result Proving extensions of unique continuation principles for k-harmonic maps.

The hyperelliptic mapping class group has been studied in various contexts within topology and algebraic geometry. What makes this study tractable is that there is a surjective map from the hyperelliptic mapping class group to a mapping class group of a punctured sphere. The more general family of superelliptic mapping…

2016-04-13abs ↗pdf ↗

This paper constructs real algebraic maps that are topologically special generic maps.

problem Constructing smooth maps in differential topology and real algebraic geometry.
method Constructs real algebraic maps that are topologically special generic maps.
result Real algebraic maps are topologically special generic maps.

Characterizes a general range decreasing group homomorphism.

problem Understanding range decreasing group homomorphisms in the entire mapping group.
method Characterization of a general range decreasing group homomorphism.
result Computes a particular class of homomorphisms and identifies all range decreasing group homomorphisms on specific mapping groups.

The paper proves a Liouville theorem for specific harmonic maps with free boundary.

problem Analyzing harmonic maps with free boundary conditions.
method Developed Liouville theorem for φ φ-FF-symphonic, φ φ-FF-harmonic, and φ φ-ΦS,p,εΦ_{S, p, \varepsilon} harmonic maps.
result Established Liouville theorem for the specified harmonic maps with free boundary.

We introduce slant Riemannian maps from Riemannian manifolds to almost Hermitian manifolds as a generalization of slant immersions, invariant Riemannian maps and anti-invariant Riemannian maps. We give examples, obtain characterizations and investigate the harmonicity of such maps. We also obtain necessary and sufficie…

2012-06-15abs ↗pdf ↗

The paper studies maps from pseudo-Hermitian to Kähler manifolds, proving harmonic map properties.

problem Analyzing maps between pseudo-Hermitian and Kähler manifolds.
method Investigates partial energy functionals and critical maps, proving foliated results for b\overline{\partial}_{b}- and b\partial_{b}-harmonic maps.
result Generalizes Siu's holomorphicity result to b\overline{\partial}_{b}- and b\partial_{b}-harmonic maps.

The article explores constructing biharmonic and conformal biharmonic maps to spheres.

problem Constructing biharmonic and conformal biharmonic maps to spheres.
method Geometric algorithm to render harmonic maps biharmonic or conformally biharmonic.
result Explicit critical points for conformal-biharmonic maps between spheres are found.

New theorem proves convergence of various discrete conformal structures to conformal maps.

problem Proving convergence of discrete conformal structures to conformal maps.
method General theorem using piecewise linear discrete conformal mappings and Riemannian barycentric coordinates.
result Discrete conformal mappings converge to conformal maps under certain conditions.

The study classifies equivariant biharmonic maps and proves stability results for certain maps.

problem Classifying and analyzing equivariant biharmonic maps and their stability.
method Generalized biharmonic equation for equivariant maps, improved second variation formula for biharmonic maps.
result No stable proper biharmonic maps with constant square norm of tension field exist from a compact Riemannian manifold into a space form of positive sectional curvature.

The study identifies 11 types of semi-equivelar maps on the torus, with some being vertex-transitive.

problem Characterizing semi-equivelar maps on the torus and identifying vertex-transitive ones.
method Analysis of automorphism groups and face-cycles.
result There are 11 types of semi-equivelar maps on the torus, with some being vertex-transitive.

The paper defines metallic maps and explores their properties and constancy.

problem Exploring properties and constancy of metallic maps between Riemannian manifolds.
method Introducing metallic maps, providing conditions for total geodesy and harmonicity, investigating constancy under holomorphic-like conditions.
result Certain metallic maps are constant under specific conditions.