Carl Sagan’s novel Contact is ultimately about a surprising fictional mathematical result, although this is only revealed IIRC toward the end. The movie adapta

Carl Sagan’s novel Contact is ultimately about a surprising fictional mathematical result, although this is only revealed IIRC toward the end. The movie adaptation with Jody Foster changes the plot and leaves out much that the 90s movie studios thought general audiences wouldn’t be interested in. Without giving away too much, the fictional result is a really clever thought experiment by Sagan about the nature of god, if he exists. (Although Sagan wasn’t the first to think of it, he was the first to put it in such an accessible way.) It’s a fantastic novel, which for some reason isn’t much read these days.