combination of numerical solution and analytic solution
maximal solution and minimal solution
maximum solution and minimum solution
periodic solution and almost periodic solution
positive solution and negative solution
solution and positive solution
super-solution and sub-solution
upper solution and lower solution
upper solution lower solution
a convergent martingale
absolute convergent bases
absolute convergent norm
absolutely convergent integral
absolutely convergent series
absolutly convergent series
accidentally convergent
almost convergent sequence