I was unacquainted with the term but after searching it seems that Eliezer Yudkowsky wrote several posts on a BDSM website where he fantasized about recruiting a harem of highly educated women to service him which he called "math pets".
>...recruiting a harem of highly educated women to service him which he called "math pets".
Dammit, now I have a new fetish.
Someone that you introduce to free group actions and the Cox-Zucker machine, hairy ball theorems, stuff like that
Have you seen it come up with bott periodicity and the onto ele in twister space?