In 1966, Chern asked which compact orientable manifolds carry a Riemannian metric and a vector field which is parallel under this metric. An earlier paper answered this without assuming orientability.

In this present paper, we delve into an investigation of the distinctive characteristics and properties exhibited by various Ricci soliton structures that manifest within Riemannian manifolds equipped ...

November 9, 2021 -- NSITEXE, Inc. (headquartered in Minato Ward, Tokyo, Japan; President and CEO: Yukihide Niimi; hereinafter “NSITEXE”) announced that the DR1000C, a RISC-V based parallel processor ...