(e) f is continuous and closed but not open. (f) f is open and closed but not continuous.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.3: Properties Of Composite Mappings (optional)
Problem 9E: Find mappings f,g and h of a set A into itself such that fg=hg and fh. Find mappings f,g and h of a...
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Please answer e and f only

2-5. For each of the following properties, give an example consisting of two sub-
sets X, Y CR2, both considered as topological spaces with their Euclidean
topologies, together with a map f: X → Y that has the indicated property.
(a) f is open but neither closed nor continuous.
(b) f is closed but neither open nor continuous.
(c) f is continuous but neither open nor closed.
(d) f is continuous and open but not closed.
(e) f is continuous and closed but not open.
(f) f is open and closed but not continuous.
Transcribed Image Text:2-5. For each of the following properties, give an example consisting of two sub- sets X, Y CR2, both considered as topological spaces with their Euclidean topologies, together with a map f: X → Y that has the indicated property. (a) f is open but neither closed nor continuous. (b) f is closed but neither open nor continuous. (c) f is continuous but neither open nor closed. (d) f is continuous and open but not closed. (e) f is continuous and closed but not open. (f) f is open and closed but not continuous.
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