From: BURT on
Einstein saw the universe closing in geometry. But he said it had to
be a fourth dimension but not time. The fourth dimension closes the
universe. It is four dimensionally round or hypersphere model of
cosmology started by Einstein.

Eimnstein was the father of the hypersphere by his finite but
unbounded principle. He believed in a closed universe of whcih Hawking
maintain's in the No Boundary principle.

Mitch Raemsch