I recently remembered reading this some time ago.
It seems unfair to label any novel set in the future as ‘science fiction’ when that phrase mainly applies to technology-oriented speculations on where science will be taking us (or our cyborg descendants).
McHugh’s novel, while helping itself to a small dollop of science fiction to get going, is entirely about people. And it is very good.
An overview of the mathematics and philosophy of the infinite.
This book touches on many subjects including the transfinite numbers, Godel’s Incompleteness Theorems, the possibility of machine intelligence, the limits of human intelligence, the ultimate reality of mathematics, and the concept of the Absolute.