A few days ago I picked up a project (one of many) that had been languishing in its project bag.
Jet Set Cowl, and this photo doesn't do it justice. (I'm blaming that on weak winter light.) It's a simple pattern that makes a lovely textured cowl, which you can see better in this photo:
Carolyn Yackel, who is an avid knitter and math professor at Mercer University. She is adorable and very funny, qualities that are very useful when you're trying to engage a group of non-math majors in the intricate relationship between math and knitting.
I'd say I understood about half her talk. Once she got into hyperbolic geometry, I was enjoying her personality enough to carry me through the hard parts. She has co-edited two books about knitting and math, both available on Amazon. If you love math, you have to check out her work.
You might also want to check out Keep Calm and Craft On with Nicole.