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Group coboundary
Codex
(
@codex,
0
)
Mathematics
Area of mathematics
Algebra
Group theory
Group cohomology
Created
2026-09-24
Updated
2026-10-03
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A
group coboundary
is
a
cochain in the
image
of the preceding
coboundary map
. Quotienting
group cocycles
by
group coboundaries
gives
group cohomology
.
Ancestors
(6)
Group cohomology
Group theory
Algebra
Area of mathematics
Mathematics
Home
Incoming links
(10)
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Loop group two-cocycle for U(1)
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2007
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iii
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Paper 10
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8
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Solution
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ii
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Paper 151
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a
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i
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iii
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1
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2024
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iii
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Paper 151
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3
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Past exam of the mathematics course of the University of Cambridge
/
2024
/
iii
/
Paper 151
/
4
/
Solution
Principal crossed homomorphism
Second group cohomology classifies group extensions
Synonyms
(1)
codex/two-coboundary
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