Finite subunitals of the Hermitian unitals

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 extensio...

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Bibliographic Details
Published in:Journal of geometry 2022-04, Vol.113 (1), Article 22
Main Authors: Grundhöfer, Theo, Stroppel, Markus J., Van Maldeghem, Hendrik
Format: Article
Language:English
Subjects:
50 Years of Journal of Geometry
Embedding
Fields (mathematics)
Geometry
Mathematics
Mathematics and Statistics
Number theory
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Summary: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).
ISSN:0047-2468
1420-8997
DOI:10.1007/s00022-022-00636-4