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Rational map of projective varieties
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Mathematics
Area of mathematics
Geometry and topology
Algebraic geometry
Created
2026-09-24
Updated
2026-09-24
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A
rational
map
is
a
morphism
on
a
dense open
subset
, considered
up to
agreement on
a
smaller dense open
subset
.
Table of contents
Indeterminacy locus
Rational map of projective varieties
Projective Cremona transformation
Rational map of projective varieties
Indeterminacy locus
0
0
0
Rational map of projective varieties
The
indeterminacy locus
is the
set
where
a
rational
map
has no regular local representative.
Projective Cremona transformation
0
0
0
Rational map of projective varieties
A
projective Cremona transformation
is
a
birational self-
map
of
projective space
, regular on complementary dense open
subsets
together with its inverse.
Ancestors
(5)
Algebraic geometry
Geometry and topology
Area of mathematics
Mathematics
Home
Incoming links
(6)
Extension of a rational map from a smooth projective curve
Nonparametrizability of an elliptic curve
Past exam of the mathematics course of the University of Cambridge
/
2009
/
iii
/
Paper 21
/
5
/
b
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2014
/
iii
/
Paper 22
/
5
/
i
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2018
/
ii
/
Paper 4
/
24I
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2023
/
ii
/
Paper 3
/
24G
/
Solution
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