... on an n-dimensional vector space is n!/(p!(n −p)!).So at a point on a 4-dimensional spacetime there is one linearly independent 0-form, four1-forms, six 2-forms, four 3-forms, and one 4-form. ... tetrads and non-coordinate bases — the spin connection —Maurer-Cartan structure equations — fiber bundles and gauge transformations4. Gravitationthe Principle of Equivalence — gravitational redshift ... integration3. Curvaturecovariant derivatives and connections — connection coefficients — transformationproperties — the Christoffel connection — structures on manifolds — parallel trans-port — the parallel...