Author
4 free books by Augustus De Morgan, free to read online. Chapter 1 of any book is free, no account needed.
A Budget of Paradoxes, Volume I
Augustus De Morgan
The volume is a miscellany of seventeenth‑century mathematical and scientific curiosities, assembled by…
A Budget of Paradoxes, Volume II
A Budget of Paradoxes, Volume II gathers a miscellany of 19th‑century scientific polemics, ranging from…
Elements of arithmetic
First notions of logic (preparatory to the study of geometry)