Here’s another post on the foundations of quantum theory:
It’s about an amazing result, due to Maria Pia Solèr, which singles out real, complex and quaternionic Hilbert spaces as special. If you want to talk about it, please join the conversation over on the n-Category Café.
All these recent highly mathematical blog posts are a kind of spinoff of a paper I’m writing on quantum theory and division algebras. That paper is almost done. Then our normal programming will continue: I’ll keep going through Pacala and Socolow’s “stabilization wedges”, and also do a This Week’s Finds where I interview Tim Palmer.