How many Daria fanfics involve math, other than DWU? I will investigate.
Meanwhile, Hershey-chan continues a most excellent series of shipper pics with a real shocker. That totally rules. Love it.
More soon after I see what math-related fanfic there is (excluding stories where people say, "You do the math," which a lot of stories do).
LATE ADD: Hmmm, not coming up with much. John Lane and Daria argue over John's math grades in Richard Lobinske's "Echoes of a Relationship" (great story, that one), and Daria tutors Jane and Stacy in math in "The Law of Inclusion and Exclusion," by William Gasarch (also good story).