6. Let D* denote the set of all limit points of a set D. (a) Consider the set A = (0,1) U[3, 4] u {5,6). Find A. Find AU

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6 Let D Denote The Set Of All Limit Points Of A Set D A Consider The Set A 0 1 U 3 4 U 5 6 Find A Find Au 1 (20.49 KiB) Viewed 90 times

6. Let D* denote the set of all limit points of a set D. (a) Consider the set A = (0,1) U[3, 4] u {5,6). Find A. Find AU A*. What do you notice about AU A* (is it open, closed, both, or neither)? (b) Let D be an arbitrary set. Prove that the set DU D* contains all of its limit points.