Journals / Turkish Journal of Mathematics / 1996 / Cilt: 20 - Sayı: 3

$L^infinity$ (1/$omega$) uzayının invaryant tamlanmış alt uzayları ve $L^1$ ($omega$) nin yaklaşık birime sahip idealleri

Weak$star$-invariantly complemented subspaces of $L^infinity$ (1/$omega$) and ideals of $L^1$ ($omega$) with a bounded approximate identity

Pages
413–423
Publication Date
2022-11-05
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In this paper for a certain class of functions we show that the following conditions are equivalent: (i) X is topological invariantly complemented in $L^infty(1/omega)$; (ii) X is invariantly complemented in $L^infty$ (1/omega)$; (iii) The left ideal $X_perp$ has a bounded right approximate identity.

📌 3 Key Takeaways

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Objective & Hypothesis:For a locally compact group G let $L^1 (omega)$ be the weighted group algebra and let X be a weak $star$-closed translation invariant subspace of $L^infty (1/omega)$.
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Key Findings & Data:For a locally compact group G let $L^1 (omega)$ be the weighted group algebra and let X be a weak $star$-closed translation invariant subspace of $L^infty (1/omega)$.
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Conclusion & Impact:In this paper for a certain class of functions we show that the following conditions are equivalent: (i) X is topological invariantly complemented in $L^infty(1/omega)$; (ii) X is invariantly complemented in $L^infty$ (1/omega)$; (iii) The left ideal $X_perp$ has a bounded right approximate identity.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

For a locally compact group G let $L^1 (omega)$ be the weighted group algebra and let X be a weak $star$-closed translation invariant subspace of $L^infty (1/omega)$. In this paper for a certain class of functions we show that the following conditions are equivalent: (i) X is topological invariantly complemented in $L^infty(1/omega)$; (ii) X is invariantly complemented in $L^infty$ (1/omega)$; (iii) The left ideal $X_perp$ has a bounded right approximate identity.

Özet

$L^1 (omega)$ lokal kompakt G grubu üzerinde ağırlıklı grup cebiri ve X de $L^infty (1/omega)$ nin zayıf $star$-topolojisine göre kapalı, sol ötelemeye göre invaryant olan bir alt uzay olsun. Bu çalışmada; (i) X, $L^infty(1/omega)$ içinde topolojik olarak sol ötelemeye göre invaryant ve tanılanmış bir alt uzaydır; (ii) X, $L^infty(1/omega)$ da sol ötelemeye göre invaryant ve tanılanmış uzaydır; (iii) $L^1(omega)$ içindeki her $X_perp$ sol idealinin yaklaşık birimi vardır; önermelerinin denk olduklarını gösteriyoruz. Dolayısıyla X in $L^infty(1/omega)$'da tamlanmış bir alt uzayı olması için gerek ve yeter şart $X_perp$ nin en az bir yaklaşık biriminin olmasıdır.

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Cite This Article

ARGÜN, Z., TONYALI, C. (2022). $L^infinity$ (1/$omega$) uzayının invaryant tamlanmış alt uzayları ve $L^1$ ($omega$) nin yaklaşık birime sahip idealleri. Turkish Journal of Mathematics, Cilt: 20 - Sayı: 3, 413–423. https://ajindex.com/articles/141421

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