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higher geometry / derived geometry
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Given a sequence of inclusions
where
is a Borel subgroup
is a maximal torus;
this induces
the Weyl group ;
the character lattice ;
the cocharacter lattice .
a standard parabolic subgroup of is a subgroup including such that is a projective variety;
parabolic subgroup is one conjugate to the standard parabolic subgroup.
the flag variety ;
A Bruhat decomposition is, if it exists, a coproduct decomposition into a disjoint union of double cosets
with
into Schubert varieties
Last revised on August 2, 2017 at 12:40:28. See the history of this page for a list of all contributions to it.