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A reverse Denjoy theorem
Authors:Fenton  P C; Rossi  John
Institution:Department of Mathematics and Statistics
University of Otago
Dunedin
New Zealand
pfenton@maths.otago.ac.nz
Abstract:Suppose that C1 and C2 are two simple curves joining 0 to {infty},non-intersecting in the finite plane except at 0 and enclosinga domain D which is such that, for all large r, Formula has measure at most 2{alpha}, where 0 < {alpha} < {pi}.Suppose also that u is a non-constant subharmonic function inthe plane such that u(z) = B(|z|, u) for all large z isin C1 {cup} C2.Let AD(r, u) = inf { u(z):z isin D and | z | = r }. It is shownthat if AD(r, u) = O(1) (or AD(r, u) = o(B(r, u))), then limr-> {infty} B(r, u)/r{pi}/2{alpha} > 0 (or limr->{infty} log B(r, u)/log r ≥ {pi}/2{alpha}).
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