Recent content by johnstrass

I am reading Wald's book. There is a problem confused me: page 158, problem 4,(b). An symptotic statoinary flat space, two stationary observer connected with a rope. One observer A is at finite r and the other B is at infinity. Observer B is really stationary by other forces and holding the...

I am so stupid. Too simple. It is inconsistent with the Jacobi id.

Why isn't there a superalgebra having only three basis, c, a,b where c is even and a,b are odd and [c,a]=a, [c,b]=-b, [a,b]=c?