Despite Janiszewski having, in a 1918 article, given the initial impetus for the creation of the journal, he did not live long enough to see the first issue published, in Warsaw, as he died on 3 January 1920. Wacław Sierpiński and Stefan Mazurkiewicz took over as editors-in-chief. Soon after its launch, the founding editors were joined by Kazimierz Kuratowski and, later, by Karol Borsuk.
(Bradley 2006, p. 33). - Bradley, Michael J. (2006), Modern Mathematics: 1900 to 1950, Infobase Publishing, pp. 176, ISBN 0816054266 https://archive.org/details/modernmathematic0000brad/page/176
(One Hundred Volumes 1978, p. 3). - "One Hundred Volumes of "Fundamenta Mathematicae"" (PDF), Fundamenta Mathematicae, 100 (1): 1–8, 1978, MR 0485074 http://matwbn.icm.edu.pl/ksiazki/fm/fm100/fm100126.pdf
(Kuratowski 1980, p. 35). - Kuratowski, Kazimierz (1980), A Half Century of Polish Mathematics: Remembrances and Reflections, International Series in Pure and Applied Mathematics, vol. 108, Warsaw/Oxford: Wydawnictwo Naukowe PWN/Pergamon Press, pp. VIII+204, ISBN 83-01-00819-9, MR 0565253, Zbl 0438.01006 https://mathscinet.ams.org/mathscinet-getitem?mr=0565253
(Wasilewska 2013, p. 2). - Wasilewska, Anita (2013), "Chapter 1. From Logic to Computer Science–A personal Experience", in Skowron, Andrzej (ed.), Rough Sets and Intelligent Systems – Professor Zdzisław Pawlak in Memoriam: Volume 2, Intelligent Systems Reference Library, vol. 43, Berlin–Heidelberg–New York: Springer Verlag, pp. 1–5, ISBN 978-3-642-30341-8 https://books.google.com/books?id=0xlR0dv7nmcC&pg=PA2
According to Kuratowski (1980, pp. 31–32) and to the introduction to the 100th volume of the journal (1978, pp=1–2). These two sources cite an article written by Janiszewski himself in 1918 and titled "On the needs of Mathematics in Poland". - Kuratowski, Kazimierz (1980), A Half Century of Polish Mathematics: Remembrances and Reflections, International Series in Pure and Applied Mathematics, vol. 108, Warsaw/Oxford: Wydawnictwo Naukowe PWN/Pergamon Press, pp. VIII+204, ISBN 83-01-00819-9, MR 0565253, Zbl 0438.01006 https://mathscinet.ams.org/mathscinet-getitem?mr=0565253
Kuratowski (1980, pp. 31–32) and One Hundred Volumes (1978, pp. 1–2) stress the fact that these two requirements represented revolutionary decisions at that time. - Kuratowski, Kazimierz (1980), A Half Century of Polish Mathematics: Remembrances and Reflections, International Series in Pure and Applied Mathematics, vol. 108, Warsaw/Oxford: Wydawnictwo Naukowe PWN/Pergamon Press, pp. VIII+204, ISBN 83-01-00819-9, MR 0565253, Zbl 0438.01006 https://mathscinet.ams.org/mathscinet-getitem?mr=0565253
(Bradley 2006, p. 33). - Bradley, Michael J. (2006), Modern Mathematics: 1900 to 1950, Infobase Publishing, pp. 176, ISBN 0816054266 https://archive.org/details/modernmathematic0000brad/page/176
(One Hundred Volumes 1978, p. 3). - "One Hundred Volumes of "Fundamenta Mathematicae"" (PDF), Fundamenta Mathematicae, 100 (1): 1–8, 1978, MR 0485074 http://matwbn.icm.edu.pl/ksiazki/fm/fm100/fm100126.pdf
(Kuratowski 1980, p. 35). - Kuratowski, Kazimierz (1980), A Half Century of Polish Mathematics: Remembrances and Reflections, International Series in Pure and Applied Mathematics, vol. 108, Warsaw/Oxford: Wydawnictwo Naukowe PWN/Pergamon Press, pp. VIII+204, ISBN 83-01-00819-9, MR 0565253, Zbl 0438.01006 https://mathscinet.ams.org/mathscinet-getitem?mr=0565253
(Wasilewska 2013, p. 2). - Wasilewska, Anita (2013), "Chapter 1. From Logic to Computer Science–A personal Experience", in Skowron, Andrzej (ed.), Rough Sets and Intelligent Systems – Professor Zdzisław Pawlak in Memoriam: Volume 2, Intelligent Systems Reference Library, vol. 43, Berlin–Heidelberg–New York: Springer Verlag, pp. 1–5, ISBN 978-3-642-30341-8 https://books.google.com/books?id=0xlR0dv7nmcC&pg=PA2
(Kuratowski 1980, p. 32), (One Hundred Volumes 1978, p. 1). - Kuratowski, Kazimierz (1980), A Half Century of Polish Mathematics: Remembrances and Reflections, International Series in Pure and Applied Mathematics, vol. 108, Warsaw/Oxford: Wydawnictwo Naukowe PWN/Pergamon Press, pp. VIII+204, ISBN 83-01-00819-9, MR 0565253, Zbl 0438.01006 https://mathscinet.ams.org/mathscinet-getitem?mr=0565253
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