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Hatcher-Algebraic-Topology
· Problem 3.1.E
Cohomology
Mathematics — Graph Theory · dual-right-exact-sequence
Problem
If
A
→
B
→
C
→
0
A \to B \to C \to 0
A
→
B
→
C
→
0
is exact, then dualizing by applying
H
o
m
(
−
,
G
)
\mathrm{Hom}(-, G)
Hom
(
−
,
G
)
yields an exact sequence
A
∗
←
B
∗
←
C
∗
←
0
A^* \leftarrow B^* \leftarrow C^* \leftarrow 0
A
∗
←
B
∗
←
C
∗
←
0
.
Related theory
Sequence To Sequence Models
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