PSOLVER PERIODIC #The way to solve Poisson equation &END POISSON &XC &XC_FUNCTIONAL PBE &END ...
What is KSP in chemistry? The solubility product constant, Ksp, is the equilibrium constant for a solid substance dissolving in an aqueous solution. It represents the level at which a solute dissolves in solution. The more soluble a substance is, the higher the Ksp value it has.Similar...
Perturbation theory can be used to solve nontrivial differential-equation problems. Consider, for example, the Schrödinger equation initial-value problem (10)y″(x)=Q(x)y(x),y(0)=1,y′(0)=0, where Q(x) is an arbitrary continuous function of x. This is a hard problem because there...