Differences of Bijections
Daniel Velleman (Amherst/UVM)
October 28th, 4:00 PM, Votey 207
Suppose G is an abelian group. Which functions from G to G can be written as a difference of two bijections? I will discuss theorems of Marshall Hall, Jr. and Laszlo Fuchs that answer this question, as well as some generalizations. This is joint work with Dan Ullman.