Authors: Castrillon Lopez, Marco; Gadea, P. M.; Rosado Maria, Maria Eugenia Contribution: Article Journal: RESULTS IN MATHEMATICS Publication date: 2020/09/05 DOI: 10.1007/s00025-020-01259-4 Abstract: We classify four-dimensional connected simply-connected Lorentzian symmetric spaces M with connected nontrivial isotropy group furnishing solutions of the Einstein-Yang-Mills equations. Those solutions are built with respect to some invariant metric connection. in the [...]