In this paper we consider properties of the four-dimensional space-time manifold M caused by the proposition that, according to the scheme theory, the manifold
Dark energy and dark matter in the universe are assigned to the positive and negative, respectively, “hidden” relative energies between the diquark and quark
We consider a von Karman equation of memory type with a delay term . By introducing suitable energy and Lyapunov functional, we establish a general decay estima
we consider the third-order neutral functional differential equations with deviating arguments. A new theorem is presented that improves a number of results rep
Research on opinion spreading has received more and more attention in recent years. This paper focus on make a summary of opinion evolution researches, we first