 In a book entitled “Introducción al estilo matematico” (1971) the Spanish philosopher Javier de Lorenzo attempted to write a history of mathematics (admittedly partial) in terms of style. Although by 1971 Granger’s work, to be discussed in section 5, had already appeared, de Lorenzo was not aware of it and the only source on style he uses is Chevalley’s article. Indeed this book is merely an extension of Chevalley’s study to include many more ‘styles’ that have appeared in the history of mathematics. The list of mathematical styles studied by de Lorenzo is the following: