ABSTRACT
Let o = phu, and denote by aj = aJ(u), j = 0, f 1, an arbitrary reference point interior to the intersection of A and the sector e-""l3 SJ .+ Define ZJ (u, aJ) to be the set of points C for which there exists a path SJ linking C with aJ in A and having the properties :
(ii) A s opasses along 2j from 6 to aj the realpart of uv3I2 isnondecreasing, the branch of this function being continuous and chosen so that R ~ ( U V ~ ~ ~ ) > 0 in the neighborhood of aj. The point aj may be at infinity on an infinite R2 arc Yj = Yj(u), say, provided that .$!j coincides with PJ in a neighborhood of a/.
