10. Consider the set of integers Z. For each n € Z we define the set B(n) = {n} if n is odd and B(n) = (n − 1, n, n + 1} if n is even. The collection B = {B(n) n|ne E Z} is a basis for a topology on Z. The resulting topology is known as the "digital line topology" and we refer to Z with this topology as the "digital line". Show that the digital line is not homeomorphic to Z with the finite complement topology.
10. Consider the set of integers Z. For each n € Z we define the set B(n) = {n} if n is odd and B(n) = (n − 1, n, n + 1} if n is even. The collection B = {B(n) n|ne E Z} is a basis for a topology on Z. The resulting topology is known as the "digital line topology" and we refer to Z with this topology as the "digital line". Show that the digital line is not homeomorphic to Z with the finite complement topology.
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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10. Consider the set of integers Z. For each n € Z we define the set B(n) = {n} if nis
odd and B(n) = {n − 1, n, n + 1} if n is even. The collection B = {B(n) n | n = € Z } is a
basis for a topology on Z. The resulting topology is known as the "digital line
topology" and we refer to Z with this topology as the "digital line". Show that the digital
line is not homeomorphic to Z with the finite complement topology.
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