And I thought I was nerdy…

Some one is knitting topographical surfaces:

Not sure I understand the mathematics involved, but these are very interesting. How do you think you wear it? Visit Dr Sarah-Marie Belcastro for information about her work and other information about mathematical knitting. There is even a book – hmm, now, I know what I want for my birthday. I think I’ll have to start with a basic mobius strip. I’ve made one the easy way – knitting a long strip and grafting together, but not this way where the mobius knit is part of the knitting.

[Hat tip M.O., thanx]