Finite subunitals of the Hermitian unitals

2022/01/07 by Theo Grundhöfer, Grundhöfer, Theo, Markus J. Stroppel +3
Mathematics · #51A10 #51E10 #Combinatorics (math.CO) #FOS: Mathematics #math.CO #msc:51A10 #msc:51E10

paper · pdf · doi:10.48550/arxiv.2201.02701

arxiv created 2022/01/07 · arxiv updated 2022/01/11

Abstract

Every finite subunital of any generalized hermitian unital is itself a hermitian unital; the embedding is given by an embedding of quadratic field extensions. In particular, a generalized hermitian unital with a finite subunital is a hermitian one (i.e., it originates from a separable field extension).

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