On the connectedness of Deligne-Lusztig varieties
classification
🧮 math.AG
keywords
deligne-lusztigvarietiesconnectednesscriterionclosureconnecteddeterminesgive
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We give a criterion which determines when a union of one-dimensional Deligne-Lusztig varieties has a connected closure. We also obtain a new, short proof of the connectedness criterion for Deligne-Lusztig varieties due to Lusztig.
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