Recent content by Porrum_doctum

Thanks, but that doesn't help me in proving how you would get to a 5* , a 10 and a 1 starting from a 16. Why not say, a 4 and a 12 (just to name two random numbers which add to 16)? I understand now where the 16 comes from, it's one of two spinor representations of dimension 2^m for a group...

Homework Statement I've been looking at Paul Langacker's "Grand unified theories and proton decay" for a course on GUTs. I'm stuck with the 16 irrep of SO(10), particularly I don't understand how to prove the statement that the 16 decomposes as 5* + 10 + 1. I can see why it's useful physics...