Torsional Topological Invariants

Understand

Making use of the SO(3,1) Lorentz algebra, we derive in this paper two series of Gauss-Bonnet type identities involving torsion, one being of the Pontryagin type and the other of the Euler type.

• Two of the six identities involve only torsional tensorial entities and are purely torsional topological invariants.