Abstract
Examples are given of holomorphic self-maps of the unit ball on C 2 {{\text {C}}^2} which induce unbounded composition operators on the Hardy space H 2 {H^2} . In particular, an example is given which is one-to-one on the closed ball. Also, a valence condition on the boundary of this ball is given which is sufficient for unboundedness of the induced composition operator.
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