The "calculation" of Go is not the same thing as the "calculation" of mathematics. The calculation of Go is a kind of prediction. Similar to the "enumeration method" in mathematical inductive reasoning, this is an extremely narrow corner of the huge branch system of mathematics. Unless a university chooses a mathematics major, it is unlikely to be exposed to relevant research.
As for the relationship between Weiqi and mathematics, actually Weiqi itself is mathematics. After all, the Pythagorean school believes that numbers are the source of everything.
What things in the world have nothing to do with mathematics?
In fact, Go is a very direct embodiment.