Millennium Problems / mathy!John

[jenna_marianne]

I just re-read kashkow's Irreplacable, and it also reminded me of astolat's Time in a Bottle.

Both of these got me wondering: are there any other fics dealing with the characters working on Millennium Problems?

Or really, any mathy!John fic recs would be welcome.

ETA: List of found Millennium Problem-related fics:
A Boyfriend For Christmas by scribblinlenore (McKay/Sheppard)
Freedom's Just Another Word for Nothing Left to Lose by synecdochic (gen, past-McKay/Sheppard, Warning: Character Death)
House Call (and sequel Three Visits and One Date) by scribblinlenore (McKay/Sheppard)
Irreplacable by kashkow (gen)
The This Delicate Things We've Made series by race_the_ace (Mitchell/Sheppard, Warnings: Child Abuse, Rape)
Time in a Bottle by astolat (McKay/Sheppard)
The What Might Have Been series by keiramarcos (McKay/Sheppard)


[mods: not sure if the tags are right; I accidentally added the genre tag and can't remove it.]