Cian Ludovico Masetti Zannini (30 September 1875 – 19 June 1948) was a well known Italian mathematician, he was professor at the University of Bologna and the University of Padua. Cian also wrote many famous math books, most about Calculus and Algebra. Here are a few of his written works:
* 1904 - Is there a Calculus more geometric than that of Lagrange and Euler for the theory of maxima and minima?
* 1921 - Algebraic Analysis of the second degree equation
* 1928 - The concept of infinity in the history of mathematics
* 1931 - Mathematical philosophy of Leonardo da Vinci