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Hatcher-Algebraic-Topology
· Problem 2.1.18
Homology
Mathematics — Graph Theory · relative-homology
Problem
Show that for the subspace
Q
⊂
R
\mathbb{Q} \subset \mathbb{R}
Q
⊂
R
, the relative homology group
H
1
(
R
,
Q
)
H_1(\mathbb{R}, \mathbb{Q})
H
1
(
R
,
Q
)
is free abelian and find a basis.
Related theory
Relative Homology And Excision
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