ABSTRACT
For the I,-type solution we define Z,(u).to be the set of points I: which can be linked to the origin by a path 4, lying in Z and having the properties:
(i) 9, consists of afinite chain of R, arcs. (ii) As v passes along 9, from 0 to [, both ~ e ( u v ' ~ ~ ) and Ivl are nondecreasing. For the K,-type solution we suppose a to be an arbitrary finite point of Z, or the
(i) 4, consists of afinite chain of R, arcs, and $a is at infinity then $2 coincides with 9 in the neighborhood of a.
