@unpublished{MaXu2001, author = {Ma, Li and Xu, Xingwang}, title = {Positive solutions of a logistic equation on unbounded intervals}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-26015}, year = {2001}, abstract = {In this paper, we study the existence of positive solutions of a one-parameter family of logistic equations on R+ or on R. These equations are stationary versions of the Fisher equations and the KPP equations. We also study the blow up region of a sequence of the solutions when the parameter approachs a critical value and the nonexistence of positive solutions beyond the critical value. We use the direct method and the sub and super solution method.}, language = {en} }