The Scottish Book: Mathematics from the Scottish Cafe - Tapa dura

"The problems themselves were mostly composed by Banach, Ulam and Stanis\l aw Mazur, though many other mathematicians also made contributions. They cover a wide range of topics, including measure theory, summability, convexity, fixed point theory, topology of surfaces, probability, integral equations, functional equations, infinite groups, infinite games and combinatorial geometry...While the specialist in functional analysis should be very familiar with this work, the general reader will gain much entertainment and instruction from it as well."--MathSciNet

A lively mathematics community developed in Poland between the world wars. One result of this was the genesis of The Scottish Book, a collection of problems, many to this day unsolved. The Scottish Book is a record of informal discussions by many of today 's leading mathematicians on topics ranging from summability theory, functional and real analysis, group, measure, and set theory, and probability.