Results 91 to 100 of about 601,209 (237)
Efficient merging of multiple segments of B\'ezier curves [PDF]
, 2015 This paper deals with the merging problem of segments of a composite B\'ezier curve, with the endpoints continuity constraints. We present a novel method which is based on the idea of using constrained dual Bernstein polynomial basis (P.
Gospodarczyk, Przemysław +2 more
core
Negativity‐preserving transforms of tuples of symmetric matrices
Proceedings of the London Mathematical Society, Volume 132, Issue 4, April 2026.Abstract Compared to the entrywise transforms which preserve positive semidefiniteness, those leaving invariant the inertia of symmetric matrices reveal a surprising rigidity. We first obtain the classification of negativity preservers by combining recent advances in matrix analysis with some novel arguments relying on well‐chosen test matrices, Sidon ...
Alexander Belton +3 more
wiley +1 more source
Quantum (q, h)-Bézier surfaces based on bivariate (q, h)-blossoming
Demonstratio Mathematica, 2019 We introduce the (q, h)-blossom of bivariate polynomials, and we define the bivariate (q, h)-Bernstein polynomials and (q, h)-Bézier surfaces on rectangular domains using the tensor product.
Jegdić Ilija +2 more
doaj +1 more source
Approximation of Discontinuous Functions by Positive Linear Operators. A Probabilistic Approach
Mathematical Methods in the Applied Sciences, Volume 49, Issue 5, Page 4184-4197, 30 March 2026.ABSTRACT We obtain approximation results for general positive linear operators satisfying mild conditions, when acting on discontinuous functions and absolutely continuous functions having discontinuous derivatives. The upper bounds, given in terms of a local first modulus of continuity, are best possible, in the sense that we can construct particular ...
J.A. Adell +2 more
wiley +1 more source
Multiscale Bernstein polynomials for densities [PDF]
, 2014 Our focus is on constructing a multiscale nonparametric prior for densities. The Bayes density estimation literature is dominated by single scale methods, with the exception of Polya trees, which favor overly-spiky densities even when the truth is smooth.
Canale, Antonio, Dunson, David B.
core
Early Intervention in Psychiatry, Volume 20, Issue 3, March 2026.ABSTRACT Introduction School refusal affects many children and adolescents receiving psychiatric care; however, predictors of new‐onset refusal and successful return during treatment remain unclear. This retrospective cohort study identified factors associated with (1) developing school refusal among initially attending patients and (2) returning to ...
Yoshinori Sasaki +10 more
wiley +1 more source
A numerical study for off-centered stagnation flow towards a rotating disc
Propulsion and Power Research, 2015 In this investigation, a semi-numerical method based on Bernstein polynomials for solving off-centered stagnation flow towards a rotating disc is introduced.
M. Heydari +3 more
doaj +1 more source
Deficient Bernstein polynomials
Journal of Approximation Theory, 1989 In the first part of the paper the author gives another proof of the following theorem, established by \textit{D. Freedman} and \textit{E. Passow} [J. Approximation Theory 39, 89-92 (1983; Zbl 0534.41005)]. Let f be a piecewise linear function having (possible) changes of slope only at the points i/m, \(i=1,2,...m-1\).
openaire +1 more source
A de Casteljau Algorithm for 𝑞-Bernstein-Stancu Polynomials
Abstract and Applied Analysis, 2011 This paper is concerned with a generalization of the 𝑞-Bernstein polynomials and Stancu operators, where the function is evaluated at intervals which are in geometric progression.
Grzegorz Nowak
doaj +1 more source
Smooth ROC curve estimation via Bernstein polynomials. [PDF]
PLoS One, 2021 Wang D, Cai X.
europepmc +1 more source