We study the interaction effects on the condensates by considering a model
of one-dimensional bosons. The power law type external potential allows for
the formation of a condensate in these systems. Using a density-functional
theory type formalism we obtain an equation describing the condensate wave
function in the limit of very strong interactions between the bosons. The
properties of the condensate in the model system with strong interactions a
re investigated. The equivalence of strongly interacting bosons to noninter
acting spinless fermions is demonstrated.