Results 31 to 40 of about 612 (176)

The Characterization of Riordan Arrays and Sheffer-type Polynomial Sequences [PDF]

open access: yes, 2012
Here we present a characterization of Sheffer-type polynomial sequences based on the isomorphism between the Riordan group and Sheffer group and the sequence characterization of Riordan arrays.
He, Tian-Xiao
core  

DiskScissors: Cutting Arbitrary‐Topology Solids for Bijective Mapping

open access: yesComputer Graphics Forum, EarlyView.
Abstract An algorithm for cutting solid objects in a topology‐controlled manner is presented. Concretely, given a loop on the object boundary, a disk‐topology cut surface bounded by the loop is constructed in the interior. In contrast to various previous approaches, both disk topology and conformance to the prescribed loop are ensured by construction ...
S. Hinderink, M. Campen
wiley   +1 more source

The Iterated Logarithmic Algebra. II. Sheffer sequences

open access: yesJournal of Mathematical Analysis and Applications, 1991
An extension of the theory of the Iterated Logarithmic Algebra gives the logarithmic analog of a Sheffer or Appell sequence of polynomials. This leads to several examples including Stirling's formula and a logarithmic version of the Euler-MacLaurin summation formula.
openaire   +2 more sources

Embedding Optimization of Layouts via Distortion Minimization

open access: yesComputer Graphics Forum, EarlyView.
Abstract Given an embedding of a layout in the surface of a target mesh, we consider the problem of optimizing the embedding geometrically. Layout embeddings partition the surface into multiple disk‐like patches, making them particularly useful for parametrization and remeshing tasks, such as quad‐remeshing, since these problems can then be solved on ...
A. Heuschling, I. Lim, L. Kobbelt
wiley   +1 more source

Some remarks on a paper by L. Carlitz [PDF]

open access: yes, 2007
We study a family of orthogonal polynomials which generalizes a sequence of polynomials considered by L. Carlitz. We show that they are a special case of the Sheffer polynomials and point out some interesting connections with certain Sobolev orthogonal ...
Dominici, Diego
core   +1 more source

Almost Sharp Bounds on the Number of Discrete Chains in the Plane [PDF]

open access: yes, 2020
The following generalisation of the Erdős unit distance problem was recently suggested by Palsson, Senger and Sheffer. For a sequence δ=(δ₁,… ,δ_k) of k distances, a (k+1)-tuple (p₁,… ,p_{k+1}) of distinct points in ℝ^d is called a (k,δ)-chain if ‖p_j-p_{
Kupavskii, Andrey, Frankl, Nóra
core   +1 more source

A determinantal approach to Sheffer sequences

open access: yesLinear Algebra and its Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Certain results associated with hybrid relatives of the q-Sheffer sequences

open access: yesBoletim da Sociedade Paranaense de Matemática, 2022
The intended objective of this paper is to introduce a new class of the hybrid q-Sheffer polynomials by means of the generating function and series definition. The determinant definition and other striking properties of these polynomials are established. Certain results for the continuous q-Hermite-Appell polynomials are obtained.
Subuhi Khan, Tabinda Nahid
openaire   +2 more sources

SharpEdge: Edge Feature Surface Reconstruction From Space Curves

open access: yesComputer Graphics Forum, EarlyView.
SharpEdge reconstructs surfaces with sharp features from sparse 3D curve networks. By estimating dual normals along curves, our method preserves ridges and corners while producing high‐quality meshes. Abstract Reconstructing high‐quality surfaces from sparse 3D space curves remains challenging, particularly when sharp feature edges are involved ...
X. Yu, A. Sheffer, N. Carr, Y. Gingold
wiley   +1 more source

Comparative analysis of Mycobacterium tuberculosis pe and ppe genes reveals high sequence variation and an apparent absence of selective constraints. [PDF]

open access: yes, 2012
Contains fulltext : 110619.pdf (Publisher’s version ) (Open Access)Mycobacterium tuberculosis complex (MTBC) genomes contain 2 large gene families termed pe and ppe.
Nicolaas C. Gey van Pittius (173264)   +52 more
core   +1 more source

Home - About - Disclaimer - Privacy