The aim of this book, announced in the first edition, is to give a bird’seye view of undergraduate mathematics and a glimpse of wider horizons. The second edition aimed to broaden this view by including new chapters on number theory and algebra, and to engage readers better by including many more exercises. This third (and possibly last) edition aims to increase breadth and depth, but also cohesion, by connecting topics that were previously strangers to each other, such as projective geometry and finite groups, and analysis and combinatorics
