2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117709A generalized theory unifying gravity with electromagnetism was proposed by Einstein in 1945. He considered a Hermitian metric on a real space-time. In this work we review Einstein's idea and generalize it further to consider gravity in a complex Hermitian space-time.Published in "Einstein in Alexandria, The Scientific Symposium", Editor Edward Witten, Publisher Bibilotheca Alexandrina, pages 39-53 (2006)High Energy Physics - Theorytext