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Displaying 101 – 120 of 120

Theoretical analysis for $ℓ_{1}$ - $ℓ_{2}$ minimization with partial support information

Haifeng Li, Leiyan Guo (2025)

Applications of Mathematics

We investigate the recovery of $k$ -sparse signals using the $ℓ_{1}$ - $ℓ_{2}$ minimization model with prior support set information. The prior support set information, which is believed to contain the indices of nonzero signal elements, significantly enhances the performance of compressive recovery by improving accuracy, efficiency, reducing complexity, expanding applicability, and enhancing robustness. We assume $k$ -sparse signals $𝐱$ with the prior support $T$ which is composed of $g$ true indices and $b$ wrong indices,...

Truncation Error Bounds for Limit-Periodic Continued Fractions K(an/1) With lim an = 0.

Christopher Baltus, William B. Jones (1985)

Numerische Mathematik

Über die Abhängigkeit der Fehlerfunktion bei der rationalen Lp-Approximation von den Koeffizienten des Nennerpolynoms bei minimalem Zählerpolynom.

G. LAMPRECHT (1970)

Numerische Mathematik

Über optimale Formeln zur numerischen Berechnung linearer Funktionale

Ivo Babuška (1965)

Aplikace matematiky

Über optimale Quadraturformeln mit freien Knoten zu Hilberträumen periodischer Funktionen.

R. Brombeer (1978)

Numerische Mathematik

Un procédé d'approximation d'une fonction convexe lipschitzienne et de ses singularités

Bernard Lacolle (1985)

ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique

Unicity of Best One-Sided L1-Approximations

H. Strauß (1982)

Numerische Mathematik

Universal approximation by hill functions

Karel Segeth (1972)

Czechoslovak Mathematical Journal

Universal simultaneous approximations of the coefficient functionals

Petr Přikryl (1977)

Časopis pro pěstování matematiky

Universally optimal approximation of functionals

Milan Práger (1979)

Aplikace matematiky

A universal optimal in order approximation of a general functional in the space of continuous periodic functions is constructed and its fundamental properties and some generalizations are investigated. As an application the approximation of singular integrals is considered and illustrated by numerical results.