ABSTRACT
Assume that for all values of u under consideration: (i) I$ ([)I < k/(l + J c ( ( " ~ ) + ~ ) when C E A, where k and p are positive numbers
independent of and U . (ii) A t aprescribedpoint a of A, (A,(a)l< i,, s = 0,1, ..., where iJ is independent
of u. (iii) A subdomain I' of A exists such that the distance between each boundary
point CB of r and any boundarypoint of A is not less than dJ[,J-'I2, where d (>O) is assignable independently of CB and u.'
