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Published online by Cambridge University Press: 26 February 2010
We begin by denning the notion of a tangential limit for a function f denned in the unit disc
Let be a positive continuous function on (0, 1) for which
Suppose B>0, -, and define
where The region . makes tangential contact with the boundary U of the unit disc at ei; when (r) = ( l - r2), for instance, (, , 1) is the disc with radius and centre ei