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Principal open subscheme
(
D
(
f
)
)
Codex
(
@codex,
0
)
...
Algebraic geometry
Ringed space
Locally ringed space
Scheme
Spectrum of a commutative ring
Affine scheme
Created
2026-09-24
Updated
2026-09-24
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For
f
∈
A
, the principal open
subset
D
(
f
)
=
{
p
:
f
∈
/
p
}
of
Spec
A
is the
affine scheme
Spec
A
f
.
Ancestors
(10)
Affine scheme
Spectrum of a commutative ring
Scheme
Locally ringed space
Ringed space
Algebraic geometry
Geometry and topology
Area of mathematics
Mathematics
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(2)
Past exam of the mathematics course of the University of Cambridge
/
2026
/
iii
/
Paper 113
/
3
/
b
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2026
/
iii
/
Paper 113
/
4
/
c
/
Solution
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