On wonderful compactifications of SL(2,F)SL(2,F) for non-Archimedean local fields FF

preprint2023arXivOpen access

Abstract

We compute the wonderful compactification of symmetric varieties of SL(2,F)SL(2,F), where FF is a finite field-extension of QpQ_p with p2p\neq 2, that comes from either an abstract or FF-involutions of SL(2,F)SL(2,F). For each of those wonderful compactifications we find the SL(2,F)SL(2,F)-stabilizers of the accumulation points of the corresponding symmetric varieties and compare them to the Chabauty limits found in Ciobotaru--Leitner 2022.

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