Groups of components and Weil restriction
classification
🧮 math.NT
math.AG
keywords
restrictionweilarbitrarycomponentsgroupapplicationsbehaviorcommutative
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We determine the behavior under Weil restriction of the group of connected components of the special fiber of an arbitrary smooth group scheme (whose Weil restriction exists) over an arbitrary (commutative and unital) local ring. Applications to N\'eron models are given.
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