Please prove the following with clear steps and/or related theorems. Problem 2. If X is a set, P(X) denotes the set of all subsets of X. So for example, if X = {x, y}, then P(X) is the set {Ø, {x}, {y}, {x, y}}. For subsets A and B of X, let A + B denote the set of x € X such that x is in both A and B or æ is in neither A nor B. (i) Show that (P(X), →,U) is a ring.

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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Please prove the following with clear steps and/or related theorems.
Problem 2. If X is a set, P(X) denotes the set of all subsets of X. So for example, if
X = {x, y}, then P(X) is the set {Ø, {x}, {y}, {x, y}}. For subsets A and B of X, let A + B
denote the set of x € X such that r is in both A and B or x is in neither A nor B.
(i) Show that (P(X), →,U) is a ring.
(ii) For subsets A and B of X, A®B denotes the set of points in X that belong to exactly
one of the sets A and B. Show that (P(X), , n) is isomorphic to (P(X), +,U).
(iii) Show that every prime ideal of P(X) is maximal.
Transcribed Image Text:Please prove the following with clear steps and/or related theorems. Problem 2. If X is a set, P(X) denotes the set of all subsets of X. So for example, if X = {x, y}, then P(X) is the set {Ø, {x}, {y}, {x, y}}. For subsets A and B of X, let A + B denote the set of x € X such that r is in both A and B or x is in neither A nor B. (i) Show that (P(X), →,U) is a ring. (ii) For subsets A and B of X, A®B denotes the set of points in X that belong to exactly one of the sets A and B. Show that (P(X), , n) is isomorphic to (P(X), +,U). (iii) Show that every prime ideal of P(X) is maximal.
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