The Putnam Archive

The Putnam Competition is the premier mathematical competition for undergraduate students in the USA. This collection contains tex and pdf files of Putnam problems and solutions with commentary, as well as links to secondary resources related to Putnam.

The Putnam problems are among the hardest challenges a mathematician will encounter outside of state-of-the-art research, but it is well worth studying and struggling through them for the beautiful and deep insights they can provide.