Improved Krasnosel'skii theorems for the dimension of the kernel of a starshaped set
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BREEN, Marilyn: ?Clear visibility and the dimension of kernels of starshaped sets,? Proc. Amer. Math. Soc. 85(1982), 414,418.
BREEN, Marilyn: ?Increasing unions of starlike sets,? submitted.
BREEN, Marilyn: ?Points of local nonconvexity, clear visibility, and starshaped sets in Rd,? Journal of Geometry 21(1983), 42?52.
KATCHALSKI, Meir: ?The dimension of intersections of convex sets,? Israel J. Math. 10(1971), 465?470.
KRASNOSEL'SKII, M. A.: ?Sur un crit�re pour qu'un domaine soit �toil�,? Mat. Sb. (61) 19 (1946), 309?310.
LAY, Steven R.:Convex Sets and Their Applications, John Wiley, New York, 1982.
VALENTINE, F.A.:Convex Sets, McGraw-Hill, New York, 1964.