Approximations of $\sigma$-classes and $\pi$-classes
Mlček, Josef
Commentationes Mathematicae Universitatis Carolinae, Tome 020 (1979), p. 669-679 / Harvested from Czech Digital Mathematics Library
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Publié le : 1979-01-01
Classification:  02K10,  02K99,  03E70,  04A99 
@article{105960,
     author = {Josef Ml\v cek},
     title = {Approximations of $\sigma$-classes and $\pi$-classes},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     volume = {020},
     year = {1979},
     pages = {669-679},
     zbl = {0449.03051},
     mrnumber = {555182},
     language = {en},
     url = {http://dml.mathdoc.fr/item/105960}
}

Mlček, Josef. Approximations of $\sigma$-classes and $\pi$-classes. Commentationes Mathematicae Universitatis Carolinae, Tome 020 (1979) pp. 669-679. http://gdmltest.u-ga.fr/item/105960/

K. Čuda P. Vopěnka Real and imaginary classes in the alternative set theory, Comment. Math. Univ. Carolinae 20 (1979), 639-653. (1979) | MR 0555180

A. Sochor P. Vopěnka Revealments, to appear in Comment. Math. Univ. Carolinae 21 (1980). (1980) | MR 0566243

P. Vopěnka Mathematics in the alternative set theory, Teubner-Texte, Leipzig, 1979. (1979) | MR 0581368