So I have seen this result mentioned a few times but never with a proper proof. I know that the Minkowski difference of two disjoint convex sets is convex and that the Minkowski difference of two closed sets is not necessarily closed (?) I've tried to sketch a proof but haven't gotten very far yet. All help is appreciated!
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https://math.stackexchange.com/questions/1882306/minkowski-difference-of-two-convex-sets-is-convex – Eric Towers Jan 01 '21 at 00:22
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Indeed that question is about two convex sets having a convex Minkowski difference. – mustAsk Jan 01 '21 at 10:47