Presenting the cohomology of a Schubert variety: Proof of the minimality conjecture
Presenting the cohomology of a Schubert variety: Proof of the minimality conjecture
Abstract A minimal presentation of the cohomology ring of the flag manifold was given in A. Borel (1953). This presentation was extended by E. AkyildizâA. LascouxâP. Pragacz (1992) to a nonminimal one for all Schubert varieties. Work of V. GasharovâV. Reiner (2002) gave a short, that is, polynomialâsize, presentation for âŚ