Stuart, Charles A.2021-01-142021-01-142021-01-142020-01-0110.14232/ejqtde.2020.1.90https://infoscience.epfl.ch/handle/20.500.14299/174688WOS:000601305000001This paper deals with a singular, nonlinear Sturm-Liouville problem of the form {A(x)u'(x)}'+ lambda u (x) = f (x, u(x), u'(x)) on (0,1) where A is positive on (0,1] but decays quadratically to zero as x approaches zero. This is the lowest level of degeneracy for which the problem exhibits behaviour radically different from the regular case. In this paper earlier results on the existence of bifurcation points are extended to yield global information about connected components of solutions.Mathematics, AppliedMathematicssingular sturm-liouville problemglobal bifurcationhadamard differentiable mappingcritically tapered rodporous-medium equationdegeneratedifferentiabilitybehaviorpointstext::journal::journal article::research article