Who is Jack Kerouac from Notes of a Dirty Old Man and what is their importance?

Jack Kerouac is another character in several of Bukowski's stories, as either a reference or a main character. In section 5, readers are given a clear understanding of Jack's relationship with Bukowski. Both men are similar, in that each lives on the edge and writes harshly, crudely, and honestly about the world they live in.