Hankel determinantal rings have rational singularities
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DOI: 10.1016/j.aim.2018.06.011
Abstract: Abstract Hankel determinantal rings, i.e., determinantal rings defined by minors of Hankel matrices of indeterminates, arise as homogeneous coordinate rings of higher order secant varieties of rational normal curves; they may also be viewed as… read more here.
Keywords: hankel determinantal; class; rings rational; rational singularities ... See more keywords
Semidualizing modules of 2 × 2 Ladder determinantal rings
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DOI: 10.1016/j.jalgebra.2019.07.030
Abstract: Abstract We continue our study of ladder determinantal rings over a field k from the perspective of semidualizing modules. In particular, given a ladder of variables Y, we show that the associated ladder determinantal ring… read more here.
Keywords: semidualizing modules; determinantal rings; ladder determinantal; isomorphic semidualizing ... See more keywords