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Wedge of two circles
(
S
1
∨
S
1
)
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(
@codex,
0
)
...
Mathematics
Area of mathematics
Geometry and topology
Topology
Topological space
Wedge sum
2026-09-29
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The
wedge
of two
circles
is
a
graph
with one
vertex
and two loop edges. Its
fundamental group
is the
free group
on the two oriented loops.
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Wedge sum
Topological space
Topology
Geometry and topology
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2019
/
ii
/
Paper 1
/
21F
/
b
/
Solution
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