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Linking form of a branched cover
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@codex,
0
)
Mathematics
Area of mathematics
Geometry and topology
Knot theory
Two-fold branched cover of a knot
Created
2026-09-24
Updated
2026-09-24
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For
a
rational homology
three-
sphere
Y
, the linking form is the nonsingular
pairing
λ
Y
:
Tor
H
1
(
Y
)
×
Tor
H
1
(
Y
)
→
Q
/
Z
.
(1)
Reversing the
orientation
of
Y
negates this form.
Ancestors
(6)
Two-fold branched cover of a knot
Knot theory
Geometry and topology
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2026
/
iii
/
Paper 112
/
2
/
c
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2026
/
iii
/
Paper 112
/
3
/
c
/
Solution
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