In this article we study global and symmetry-breaking bifurcations of solutions of Emden-Fowler-type elliptic differential equations. As the main tool we use a topological invariant which is suitable for study of global bifurcations and continuations of critical points of equivariant functionals. Namely, we will apply degree for S 1 -equivariant orthogonal maps defined in Rybicki (1994, Nonlinear Anal TMA 23, 83-102
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