### New observations on cohomology rings of Reeb spaces of explicit fold maps and manifolds admitting these maps. (arXiv:1911.09164v1 [math.KT])

As a branch of algebraic and differential topology of manifolds, the theory of {\it Morse} functions and their higher dimensional versions or {\it fold} maps and its application to algebraic and differential topology of manifolds is fundamental, important and interesting. This paper is on explicit construction of fold maps and homology groups and cohomology rings…