Porous sets and additivity of Lebesgue measure
type: Item
instance of: scholarly article
title: Porous sets and additivity of Lebesgue measure
zbMATH Open document ID: 0716.28004
author: Miroslav Repický
published in: Real Analysis Exchange
publication date: 1990-01-01T00:00:00Z
review text: The paper is devoted to the study of the following cardinal characteristics: add(\({\mathcal I})\), cov(\({\mathcal I})\), non(\({\mathcal I})\) and cof(\({\mathcal I})\) for the sigma ideal of \(\sigma\)-strongly symmetrically porous sets and of \(\rho\)-small sets. The author compares these characteristics with those similar cardinals associated with sigma ideals of null sets and of meager sets.
Mathematics Subject Classification ID: 28A05
Mathematics Subject Classification ID: 03E35
Mathematics Subject Classification ID: 03E50
Mathematics Subject Classification ID: 54A25
zbMATH DE Number: 4179701
zbMATH Keywords: cardinal characteristics
zbMATH Keywords: porous sets
zbMATH Keywords: sigma ideals
zbMATH Keywords: null sets
zbMATH Keywords: meager sets
reviewed by: Władysław Wilczyński
MaRDI profile type: Publication
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description: scientific article; zbMATH DE number 4179701