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Thom isomorphism theorem
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Area of mathematics
Geometry and topology
Algebraic topology
Vector bundle
Orientation of a vector bundle
Thom class
Created
2026-09-24
Updated
2026-09-24
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For an
R
-oriented rank-
d
vector bundle
,
multiplication
by the
Thom class
gives
isomorphisms
H
q
(
B
;
R
)
≅
H
q
+
d
(
D
(
E
)
,
S
(
E
)
;
R
)
,
a
⟼
π
∗
a
⌣
u
E
.
(1)
Ancestors
(8)
Thom class
Orientation of a vector bundle
Vector bundle
Algebraic topology
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 114
/
3
/
Solution
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