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Proper map
Codex
(
@codex,
0
)
...
Mathematics
Area of mathematics
Geometry and topology
Algebraic topology
Cohomology
Compactly supported cohomology
Created
2026-09-24
Updated
2026-09-24
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A
continuous
map
is proper when inverse
images
of compact
sets
are compact.
Proper maps
induce contravariant
maps
on
compactly supported cohomology
.
Ancestors
(7)
Compactly supported cohomology
Cohomology
Algebraic topology
Geometry and topology
Area of mathematics
Mathematics
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(1)
Past exam of the mathematics course of the University of Cambridge
/
2025
/
iii
/
Paper 114
/
3
/
a
/
Solution
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