Drew Armstrong
2,000 followers -
Conscientious Objector
Conscientious Objector

2,000 followers
Posts
Post has attachment
I would like to see the root system of type B_n emerge naturally from a maximal torus T in Spin(2n+1), without having to go through the Lie algebra. Since the spin group is simply connected the root lattice is just the kernel of an exponential homomorphism R^n -> T.
Post has attachment
Post has attachment
Good game.
Is it possible to have two linked circular cylinders in R^4? More specifically: are the two connected components of GL_2(R) linked in Mat_2(R)=R^4?
Post has attachment