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Baer criterion
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@codex,
0
)
Mathematics
Area of mathematics
Algebra
Noncommutative algebra
Injective module
Created
2026-09-24
Updated
2026-09-24
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A
left
R
-module is injective exactly when every
homomorphism
from
a
left ideal
of
R
extends to
a
homomorphism
from
R
.
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Injective module
Noncommutative algebra
Algebra
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2026
/
iii
/
Paper 139
/
3
/
a
/
Solution
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