Thomas Aquinas (1224/6-1274) was one of the greatest of the medieval philosophers. His Summa Theologiae is his most important contribution to Christian theology, and one of the main sources for his philosophy. This volume offers most of the Summa's first 26 questions, including all of those on the existence and nature of God. Based on the 1960 Blackfriars translation, this version has been extensively revised by Brian Davies and also includes an introduction by Brian Leftow which places the questions in their philosophical and historical context. The result is an accessible and up-to-date...

This book presents elements of the theory of chaos in dynamical systems in a framework of theoretical understanding coupled with numerical and graphical experimentation. The theory is developed using only elementary calculus and algebra, and includes dynamics of one-and two-dimensional maps, periodic orbits, stability and its quantification, chaotic behavior, and bifurcation theory of one-dimensional systems. There is an introduction to the theory of fractals, with an emphasis on the importance of scaling, and a concluding chapter on ordinary differential equations. The accompanying software,...