4. (0} is open in Y. a. True b. False

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 58EQ
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Topology Answer of number 4 with justification
Let N be endowed with the discrete topology and Y = {0}U nEN- (0,1
%3D
be a subspace of
R. The topology on Y is the induced topology by the Euclidean topology on R. We define the function
f:N-(0}
Y by f(1)=0 and f(n) =
Vn > 1.
1. f is a one to one function.
a. True
b. False
2. f is onto.
a. True
b. False
3. f is continuous.
a. True
b. False
4. (0} is open in Y.
a. True
b. False
5. f is continuous.
a. True
b. False
6. f is a homeomorphism.
a. True
h. False
a
Transcribed Image Text:Let N be endowed with the discrete topology and Y = {0}U nEN- (0,1 %3D be a subspace of R. The topology on Y is the induced topology by the Euclidean topology on R. We define the function f:N-(0} Y by f(1)=0 and f(n) = Vn > 1. 1. f is a one to one function. a. True b. False 2. f is onto. a. True b. False 3. f is continuous. a. True b. False 4. (0} is open in Y. a. True b. False 5. f is continuous. a. True b. False 6. f is a homeomorphism. a. True h. False a
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