We aim to incorporate modern features and state-of-the-art technologies into the traditional concept of the “textbook” to make books interactive, adaptive, engaging, and affordable.
Calculus Made Easy
This elegant book is a very simple introduction to calculus. It is a very readable book, one of the best selling calculus books in history, and has been in print since the early 1900’s.
To make it more useful, we have edited a few parts and modernized some notations.
A course of pure mathematics
G. H. Hardy
This is one of the most influential books that have been written as an introductory mathematical analysis. The author explains the concepts in a very clear way. Although the first edition was published more than 100 years ago, it remains one of the most popular books on pure mathematics.