Results 51 to 60 of about 4,681 (167)

Quasiconformal mappings and degenerate elliptic and parabolic equations

open access: yesLe Matematiche, 1987
In this paper two Harnak inequalities are proved concerning a degenerate elliptic and a degenerate parabolic equation. In both cases the weight giving the degeneracy is a power of the jacobian of a quasiconformal mapping.
Filippo Chiarenza   +1 more
doaj  

Diffeomorphism Spline

open access: yesAxioms, 2015
Conventional splines offer powerful means for modeling surfaces and volumes in three-dimensional Euclidean space. A one-dimensional quaternion spline has been applied for animation purpose, where the splines are defined to model a one-dimensional ...
Wei Zeng   +2 more
doaj   +1 more source

GPU‐Accelerated Optimization of Discrete Ricci Flow for High‐Resolution Triangular Meshes

open access: yesIET Image Processing, Volume 19, Issue 1, January/December 2025.
Discrete Ricci flow is a valuable technique for surface parameterization via target curvatures but suffers from high computational costs. This paper overcomes this bottleneck by proposing a GPU‐accelerated framework that reformulates the iterative process into parallel matrix computations. Experiments confirm the GPU implementation achieves significant
Zhiheng Wei   +7 more
wiley   +1 more source

Hausdorff Dimension and Quasiconformal Mappings [PDF]

open access: yesJournal of the London Mathematical Society, 1973
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/135677/1/jlms0504 ...
Gehring, F. W., Väisälä, J.
openaire   +3 more sources

Lorentzian Para‐Kenmotsu Manifolds Within the Framework of ∗‐Conformal η‐Ricci Soliton

open access: yesJournal of Applied Mathematics, Volume 2025, Issue 1, 2025.
The present article intends to study the ∗‐conformal η‐Ricci soliton on n‐LPK (n‐dimensional Lorentzian para‐Kenmotsu) manifolds with curvature constraints. On n‐LPK, we derive certain results of ∗‐conformal η‐Ricci soliton satisfying the Codazzi‐type equation, R(ξ, L) · S = 0, the projective flatness of the n‐LPK manifold. At last, we conclude with an
Shyam Kishor   +4 more
wiley   +1 more source

Quasiconformal Maps and Poincaré Domains

open access: yesRocky Mountain Journal of Mathematics, 1996
Let \(D\) be a domain in \(\mathbb{R}^m\) and \(1\leq ...
Hurri-Syrjänen, Ritva   +1 more
openaire   +2 more sources

Application of Differential Subordinations to the Arithmetic–Geometric Means by Using an Operator

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
This study investigates differential subordination involving arithmetic and geometric mean approaches associated with a previously introduced operator. While earlier studies considered cases where the dominant function was convex or linear, the present work extends these results by examining differential subordinations for specific classes of convex ...
Santosh Mandal   +5 more
wiley   +1 more source

Cyclic‐Schottky strata of Schottky space

open access: yesBulletin of the London Mathematical Society, Volume 56, Issue 11, Page 3412-3427, November 2024.
Abstract Schottky space Sg${\mathcal {S}}_{g}$, where g⩾2$g \geqslant 2$ is an integer, is a connected complex orbifold of dimension 3(g−1)$3(g-1)$; it provides a parametrization of the PSL2(C)${\rm PSL}_{2}({\mathbb {C}})$‐conjugacy classes of Schottky groups Γ$\Gamma$ of rank g$g$. The branch locus Bg⊂Sg${\mathcal {B}}_{g} \subset {\mathcal {S}}_{g}$,
Rubén A. Hidalgo, Milagros Izquierdo
wiley   +1 more source

Identification of the Coordinates of Impulse Pollution Sources in Anisotropic Environments using Numerical Quasiconformal Mapping Methods

open access: yesJournal of Optimization, Differential Equations and Their Applications
A combined approach to identifying the coordinates of point impulse sources, using observation data at certain time intervals at characteristic points, has been transferred to the case of anisotropy.
Andrii Y. Bomba   +2 more
doaj   +1 more source

Quasiconformal extensions for some geometric subclasses of univalent functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
Let S denote the set of all functions f which are analytic and univalent in the unit disk D normalized so that f(z)=z+a2z2+…. Let S∗ and C be those functions f in S for which f(D) is starlike and convex, respectively.
Johnny E. Brown
doaj   +1 more source

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