0011-4561 On some aspects of the set theory and topology in J. Puzyna’s monumental work On some aspects of the set theory and topology in J. Puzyna’s monumental work Domoradzki Stanisław author Zarichnyi Mykhailo author Instytut Historii, Uniwersytet Rzeszowski Uniwersytet Rzeszowski Ivan Franko National University of Lviv 01s7y5e82 Correspondence to: Stanisław Domoradzki stanislawdomoradzki@gmail.com Correspondence to: Mykhailo Zarichnyi zarichnyi@yahoo.com 19 09 2014 Nauki Podstawowe Zeszyt 1 NP (7) 2014 2014 85 97 Copyright © 2014 2014 <p style="text-align: justify;"> The article highlights certain aspects of the set theory and topology in Puzyna’s work Theory of analytic functions (1899, 1900). In particular, the following notions are considered: derivative of a set, cardinality, connectedness, accumulation point, surface, genus of surface.</p>