This paper studies the
bifurcation of solutions of nonlinear eigenvalue problems of the form
Lu = λu + H(λ,u), where L is linear and H is o(∥u∥) on bounded λ intervals. It is
shown that isolated normal eigenvalues of L having odd algebraic multiplicity are
bifurcation points, and moreover possess branches of solutions which satisfy
an alternative theorem. A related situation is studied, and an application
explored.