In this paper properties of the Minkowski-Pontryagin subtraction of closed bounded convex sets are investigated (see Propositions 1-3) and four criteria for summands of closed bounded convex sets are given (see Theorems 1-4).
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Jerzy Grzybowski, H. Przybycien, R. Urbanski, On Summands of Closed Bounded Convex Sets. Z. Anal. Anwend. 21 (2002), no. 4, pp. 845–850DOI 10.4171/ZAA/1111