Some porosity \(\sigma \)-ideal hierarchies (Q1978839)
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scientific article; zbMATH DE number 1449397
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Some porosity \(\sigma \)-ideal hierarchies |
scientific article; zbMATH DE number 1449397 |
Statements
Some porosity \(\sigma \)-ideal hierarchies (English)
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21 May 2000
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Modifying the definition of \(\sigma \)-porous set we obtain several new \(\sigma \)-ideals, like \(\sigma \)-very porous sets, \(\sigma \)-symmetrically porous sets [see \textit{L. Zajíček}, Real Anal. Exch. 13, No. 2, 314-350 (1987/88; Zbl 0666.26003)]. The author studies inclusions between \(\sigma \)-ideals of this type.
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porosity
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\(\sigma \)-porosity
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