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Hatcher-Algebraic-Topology
· Problem 2.2.39
Homology
Mathematics — Graph Theory · mayer-vietoris-sequence
Problem
Use the preceding exercise to derive relative Mayer--Vietoris sequences for CW pairs
(
X
,
Y
)
=
(
A
∪
B
,
C
∪
D
)
(X, Y) = (A \cup B, C \cup D)
(
X
,
Y
)
=
(
A
∪
B
,
C
∪
D
)
with
A
=
B
A = B
A
=
B
or
C
=
D
C = D
C
=
D
.
Related theory
mayer-vietoris-sequence
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