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If A, B are subsets of the topological space X show that Ext(AUB) = Ext(A)n Ext(B).

If A, B are subsets of the topological space X show that Ext(AUB) = Ext(A)n Ext(B).

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Exercise 11.) If A, B are subsets of the topological space X show that Ext(AUB) = Ext(A) n Ext(B).
Transcribed Image Text:Exercise 11.) If A, B are subsets of the topological space X show that Ext(AUB) = Ext(A) n Ext(B).
Expert Solution
Step 1

Given: A and B are subsets of the topological space X.

To Prove: ExtA∪B=ExtA∩ExtB

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