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Separation properties of some subclasses of Baire 1 functions. (English) Zbl 0316.54014

##### MSC:
 54C50 Topology of special sets defined by functions 54D15 Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.) 26A21 Classification of real functions; Baire classification of sets and functions
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##### References:
 [1] Á. Császár, Supplément à la note “Sur les limites extrêmes de fonctions d’intervalle”,Rev. Roum. Math. Pures Appl.,10 (1965), 405–407. [2] C. Kuratowski,Topologie (Warszawa, 1958). [3] G. Petruska-M. Laczkovich, Baire 1 functions, approximately continuous functions and derivatives,Acta Math. Acad. Sci. Hungar.,25 (1974), 189–212. · Zbl 0279.26003 · doi:10.1007/BF01901760 [4] Z. Zahorski, Sur la première dérivée,Trans. Amer. Math. Soc.,69 (1950), 1–54. [5] M. Laczkovich, Separation of sets by derivatives,Acta Math. Acad. Sci. Hungar.,27 (1976), to appear. · Zbl 0343.26006 [6] M. Laczkovich, Separation of sets by bounded derivatives,Period. Math. Hungar.,8 (1) (1977) to appear.
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