Results from the study also showed that current prices in the delay-differential model are not predictable at the initial stage due to the time delay parameter in the supply function of price. On the other hand, current prices in their counterpart models without delay are predictable, as they always converge to the equilibrium price points defined in the system. Since most economic and physical systems are time delay inherent, it is recommended that such systems are modeled using delay-differential equations to reflect realities of the phenomena.

]]>Although a bent 3D space manifold in a 4D hyper-space is unimaginable, physicists accept this constraint. Our geometry of deformed spaces removes this constraint and shows that the Sun and other masses simply **contract** the 3D space around them. Thus, we are able to understand General Relativity (GR) almost intuitively - an intuition that inspires our imagination.

Space in GR is considered a continuous manifold, bent (curved) by energy/momentum. Both Einstein (1933) and Feynman (1963), considered the option of space being a deformed continuum rather than a bent (curved) continuous manifold. We, however, consider space to be a 3D deformed **lattice** rather than a bent continuous manifold. The geometry presented in this paper is the geometry of this kind of space.

]]>