Definition 2.6 . [02IN]
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Definition 2.6.
A rational point
of is a point
satisfying . We denote by
the set of rational points of .
More generally, for a complete extension
of , the set of -rational points of is
defined as . There is a map
, defined by the composing the
inclusion with the map
as above. The set of
algebraic points
of is
the union of for all finite extensions of
. Its image in is denoted
.
We have that
.