Some homogeneous coordinate rings that are Koszul algebras

Details Some homogeneous coordinate rings that are Koszul algebras Some homogeneous coordinate rings that are Koszul algebras

1995-01-20

arxiv.org/abs/alg-geom/9501011v2

Mathematics

Algebraic Geometry

Revised version. Due to the mistake in alg-geom/9501012 the argument only works for homogeneous coordinate rings of Schubert v

Scientific paper

Using reduction to positive characteristic and the method of Frobenius
splitting of diagonals, due to Mehta and Ramanathan, it is shown that
homogeneous coordinate rings for either proper and smooth toric varieties or
Schubert varieties are Koszul algebras.

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