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Algebraic Topology
· Problem 2.2.22
Homology — Allen Hatcher
Mathematics — Topology · euler-characteristic
Problem
For
X
X
X
a finite CW complex and
p
:
X
~
→
X
p: \tilde{X} \to X
p
:
X
~
→
X
an
n
n
n
-sheeted covering space, show that
χ
(
X
~
)
=
n
χ
(
X
)
\chi(\tilde{X}) = n\chi(X)
χ
(
X
~
)
=
n
χ
(
X
)
.
Related theory
Euler S Totient Function And Euler S Theorem
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