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Real projective space
In
mathematics
,
real projective space
, or
RP
n
, is the
topological space
of lines passing through the origin 0 in
R
n
+1
. It is a
compact
,
smooth manifold
of dimension
n
, and is a special case
Gr
(1,
R
n
+1
) of a
Grassmannian
space.
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