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Notes
1[Citation1] reviews the previous volume and lists the titles of all the volumes of The Enigma Bulletin.
2The review appeared in the 29 December 1974 New York Times Book Review and is reprinted in [3, pp. 211–213].
3A promise is made for a special volume of The Enigma Bulletin devoted to Zygalski.
4Kapera notes, “We know how many students were selected. Exactly twenty-three young mathematicians were admitted to the first meeting with the three representatives of the Cipher Bureau from Warsaw. We do not know the students’ names (except for the three) or places of their birth but I suppose that all of them came from Wielkopolska (Great Poland) and were good at both mathematics and German.” [p. 76].
5Chapter 4 of [Citation4] contains information about the course.
6Interestingly, Rejewski also mentioned that “it seems that earlier independent attempts by Polish cryptographers to solve the cipher did not yield positive results. That at least could be surmised from the words of one of the lecturers, who mentioned in passing during the course that a Warsaw University professor of mathematics (later I learned that it was Prof. Mazurkiewicz), upon being asked to help, declared that the cipher was unbreakable” [6, p. 17]. Stefan Mazurkiewicz and two other mathematicians, Stanisław Leśniewski and Wacław Sierpiński, served in the Cipher Bureau during the Polish-Soviet War (1919–1921). Their successes as codebreakers might have prompted the Cipher Bureau to recruit mathematicians and to establish the Poznań cryptology course for mathematics students.
7The copyright page mentions that 150 copies were printed.
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Notes on contributors
Chris Christensen
Chris Christensen teaches mathematics and cryptology at Northern Kentucky University. His interest in cryptology and the contributions that mathematicians have made to cryptology began with an exploration of the work of Rejewski, Zygalski, and Różycki.