The Square Root of Summer by Harriet Reuter Hapgood
My rating: 2 of 5 stars
So much I didn't understand, and not just about the math! That was unclear enough, and I suspect that it doesn't fully make sense (haven't had the opportunity to check with my math/physics nerd friends). The use of so much German was annoying and not because it's not translated but because it didn't seem realistic to use that much. Both combined led to a near-DNF/heavy skimming.
ARC provided by publisher.