Kai Nielsen 1882-1924, billedhuggeren

This chapter deals with the Dehn–Nielsen–Baer theorem, one of the most beautiful connections between topology and algebra in the mapping class group. It begins by defining the obje...

This chapter explains and proves the Nielsen–Thurston classification of elements of Mod(S), one of the central theorems in the study of mapping class groups. It first considers the...

This chapter describes Thurston's original path of discovery to the Nielsen–Thurston classification theorem. It first provides an example that illustrates much of the general theor...

The heartwarming underdog story of the 1924 Washington Senators. In 1924, Washington Senators team president Clark Griffith hired Bucky Harris, his twenty-seven-y...