A Reference to Perfect Numbers in Plato’s Theaetetus F. Acerbi OriginalPaper 15 February 2005 Pages: 319 - 348
A Delicate Collaboration: Adrian Albert and Helmut Hasse and the Principal Theorem in Division Algebras in the Early 1930’s Della D. FensterJoachim Schwermer OriginalPaper 15 February 2005 Pages: 349 - 379
Frobenius, Cartan, and the Problem of Pfaff Thomas Hawkins OriginalPaper 05 March 2005 Pages: 381 - 436