This post is in two parts. The first part consists of notes based on reading Daniel Rosiak’s book Sheaf Theory Through Examples; while the second part of this post (titled “Decompositions as topologies”) consists of new work straight from my notebook. As always the lines are blurred between learning something that is new to me and discovering something that is new to me and as well as others.
This is a companion discussion topic for the original entry at https://bmbumpus.com/2022/12/13/understanding-sheaves-%c2%a72/