Two observations about normal functions
classification
🧮 math.AG
keywords
cohomologynormalobservationsvarietyassociatedclasscontainsdegree
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Two simple observations are made: (1) If the normal function associated to a Hodge class has a zero locus of positive dimension, then it has a singularity. (2) The intersection cohomology of the dual variety contains the cohomology of the original variety, if the degree of the embedding is large.
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