Tight closure and plus closure for cones over elliptic curves
classification
🧮 math.AC
math.AG
keywords
closureellipticplustightcharacteristiccharacterizeconditionscones
read the original abstract
We characterize the tight closure of graded primary ideals in a homogeneous coordinate ring over an elliptic curve by numerical conditions and we show that it is in positive characteristic the same as the plus closure.
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