![](https://pic.pdfchm.net/empty.gif) Invitation to Number Theory (New Mathematical Library)This book is one of a series written by professional mathematicians in order to make some important mathematical ideas interesting and understandable to a large audience of high school students and laymen. Most of the volumes in the New Mathematical Library cover topics not usually included in the high school curriculum; they vary in difficulty,... | ![](https://www.pdfchm.net/pic/empty.gif) | ![](https://pic.pdfchm.net/empty.gif) Mathematics of Choice: Or, How to Count Without Counting (New Mathematical Library)This book is one of a series written by professional mathematicians in order to make some important mathematical ideas interesting and understandable to a large audience of high school students and laymen. Most of the volumes in the New Mathematical Library cover topics not usually included in the high school curriculum; they vary in diffioulty,... | ![](https://www.pdfchm.net/pic/empty.gif) | ![](https://pic.pdfchm.net/empty.gif) First Concepts of Topology (New Mathematical Library)This book is one of a series written by professional mathematicians in order to make some important mathematical ideas interesting and understandable to a large audience of high school students and laymen. Most of the volumes in the New Mathematical Library cover topics not usually included in the high school curriculum; they vary in difficulty,... |