Twistor spaces over the connected sum of 3 projective planes

Motivated by the possible characterization of Sasakian manifolds in terms of twistor forms, we give the complete classification of compact Riemannian manifolds carrying a Killing

In Theorem 2.1 below, we prove that the general case (twistor forms on a Riemannian product of compact manifolds) reduces to the study of Killing forms on the factors.. By

This lower bound —therefore, the sub-multiplicative inequality— with the following facts: (a) combinational modulus is bounded by the analytical moduli on tangent spaces of X, and

The solution of the geodesic equation (Theorem 4.1) gives a precise sense to how geodesics in ( M , g N ) generalize those discovered by Calabi [4,5] for the subspace of Kähler

This lower bound—therefore, the sub-multiplicative inequality—with the following facts: a combinational modulus is bounded by the analytical moduli on tangent spaces of X, and b

Twistor forms are a natural generalization of conformal vector fields on Riemannian manifolds.. They are defined as sections in the kernel of a conformally invariant first

The Yang-Mills (and Maxwell) equations for the gauge (connection) fields and the Dirac.. equations for the sections of spinor bundles turn out to be

From proposition 3.3 it is easy to conclude that any product (finite or infinite) of biquotient compact maps is a biquotient