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Tangle
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Mathematics
Area of mathematics
Geometry and topology
Knot theory
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2026-09-28
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A
tangle is
a
proper
embedding
of arcs and
circles
in
a
three-ball with prescribed arc endpoints on its boundary.
A
two-string tangle has four boundary endpoints.
Table of contents
Conway mutation
Tangle
Conway mutation
0
0
0
Tangle
A
Conway
mutation
cuts
a
link
along
a
sphere
meeting it in four points, rotates the enclosed two-string
tangle
through
18
0
∘
, and reglues it.
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Link diagram
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Knot theory
Geometry and topology
Area of mathematics
Mathematics
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(1)
Past exam of the mathematics course of the University of Cambridge
/
2022
/
iii
/
Paper 112
/
2
/
a
/
Solution
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