Symmetries of Alternating Cycle Matrices
This paper contains a biography of the late Jan Marik and a description of his teaching activities and methods.
This paper contains a critical edition of a short commercial arithmetic written in Castilian (ca. 1400). The manuscript has certain characteristic features, like the presence of composite fractions, that distinguishes it from other known treatises of the Iberian peninsula. The document appears to improve considerably our knowledge of the origins and the transmission of vernacular commercial arithmetic in Europe.
This paper, through the publication of two of their letters, sheds light on the political positions of two influential mathematicians of the first half of the 20th century, the German Edmund Landau and the American Edwin Bidwell Wilson. It provides substantial evidence for the widespread rejection of the political boycott of German mathematics not only by the Germans but also by the community of American mathematicians in the early 1920s.