Self cup products and the theta characteristic torsor
classification
🧮 math.NT
math.AG
keywords
selfcohomologyformulaproductsapplyassociatedcharacteristicconnecting
read the original abstract
We give a general formula relating self cup products in cohomology to connecting maps in nonabelian cohomology, and apply it to obtain a formula for the self cup product associated to the Weil pairing.
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