Sets of extended uniqueness and $\sigma$-porosity
Zelený, Miroslav
Commentationes Mathematicae Universitatis Carolinae, Tome 38 (1997), p. 337-341 / Harvested from Czech Digital Mathematics Library
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We show that there exists a closed non-$\sigma$-porous set of extended uniqueness. We also give a new proof of Lyons' theorem, which shows that the class of $H^{(n)}$-sets is not large in $U_0$.

Publié le : 1997-01-01
Classification:  28A05,  42A63,  43A46 
@article{118931,
     author = {Miroslav Zelen\'y},
     title = {Sets of extended uniqueness and $\sigma$-porosity},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     volume = {38},
     year = {1997},
     pages = {337-341},
     zbl = {0894.28001},
     mrnumber = {1455500},
     language = {en},
     url = {http://dml.mathdoc.fr/item/118931}
}

Zelený, Miroslav. Sets of extended uniqueness and $\sigma$-porosity. Commentationes Mathematicae Universitatis Carolinae, Tome 38 (1997) pp. 337-341. http://gdmltest.u-ga.fr/item/118931/

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