Polynomial Inequalities on the π/4-Circle Sector

A number of sharp inequalities are proved for the space P (2D (π/4)) of 2-homogeneous polynomials on ℝ2 endowed with the supremum norm on the sector D (π/4) := {eiθ : θ ∈ [0, π/4]}. Among the main results we can find sharp Bernstein and Markov inequalities and the calculation of the polarization con...

Descripción completa

Detalles Bibliográficos
Autores: Araujo, G., Jiménez Rodríguez, P., Muñoz-Fernández, Gustavo A., Seoane Sepúlveda, Juan Benigno
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/17906
Acceso en línea:https://hdl.handle.net/20.500.14352/17906
Access Level:acceso abierto
Palabra clave:517.98
Bernstein and Markov inequalities
Unconditional constants
Polarizations constants
Polynomial inequalities
Homogeneous polynomials
Extreme points.
Análisis funcional y teoría de operadores
Descripción
Sumario:A number of sharp inequalities are proved for the space P (2D (π/4)) of 2-homogeneous polynomials on ℝ2 endowed with the supremum norm on the sector D (π/4) := {eiθ : θ ∈ [0, π/4]}. Among the main results we can find sharp Bernstein and Markov inequalities and the calculation of the polarization constant and the unconditional constant of the canonical basis of the space P (2D (π/4)).