The conclusion is quite satisfying from an SF point of view. In particular, the way in which he makes his discovery is cute and "mind bending". Mathematical physics terminology is tossed around, but none of it means much. The important point is the strange time loop that occurs and his reaction to realizing what has happened. There is also supposed to be some resolution in the story of his relationship with his wife, but that struck me as less satisfying.

However, I am so tired of the anti-social mathematician stereotype that I have trouble enjoying the story at all. I think that if this was the only story I had read containing this tired cliche, I probably would have liked it much more. As it is, I am just adding it to my growing list of works of fiction that serve (unintentionally) to reinforce an unfair prejudice against mathematicians among the general public.

This story appeared in a collection of Canadian Science Fiction called "Tesseracts Nine".