Biographies A woefully short biography of Dodgson as Mathematician A short bio of Carroll in German. There are also links to remarks on Alice, Looking-Glass, and A Treatise on Determinants. These are also in German. A logic puzzle with a Carroll influence. An interactive pillow problem.
Insomnia gives one so much more time to create fun problems.
My German fails me. Carroll's Paradox - the Tortoise and Achilles Mathematics of Lewis Carroll Alice in Mathland A site dedicated to Carroll as mathematician Computer Science and Why Science, Language, and Literature by Matthew Belmonte. Chapter 2 of this book contains a few instances of 19th century abstract algebraic thought in Carroll's works. Math problems inspired by Lewis Carroll, Ludwig Wittgenstein and le College de Pataphysique in French. A puzzling problem concerning wise men .