d(r, y) Let (X, d) be a metric space and let p(r, y) = for all r, y E X. Show that (X, d) 1+d(x, y) is complete if and only if (X, p) is complete.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
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d(x, y)
Question 4 . Let (X, d) be a metric space and let p(x, y) =
for all r, y E X. Show that (X, d)
1+ d(x, y)
is complete if and only if (X, p) is complete.
Question 5 : What is the completion of (X,d). where X is the set of all rational numbers and d(r, y) =
%3D
|x – y| ?
Transcribed Image Text:d(x, y) Question 4 . Let (X, d) be a metric space and let p(x, y) = for all r, y E X. Show that (X, d) 1+ d(x, y) is complete if and only if (X, p) is complete. Question 5 : What is the completion of (X,d). where X is the set of all rational numbers and d(r, y) = %3D |x – y| ?
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