Geodesic
The complement of a subspace in a classical polar space
Ars Mathematica Contemporanea, Tome 17 (2019) no. 2, pp. 447-454.

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In a polar space, embeddable into a projective space, we fix a subspace, that is contained in some hyperplane. The complement of that subspace resembles a slit space or a semiaffine space. We prove that under some assumptions the ambient polar space can be recovered in this complement.
DOI : 10.26493/1855-3974.1917.ea5
Keywords: Polar space, projective space, semiaffine space, slit space, complement 
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Krzysztof Petelczyc; Mariusz Żynel. The complement of a subspace in a classical polar space. Ars Mathematica Contemporanea, Tome 17 (2019) no. 2, pp. 447-454. doi : 10.26493/1855-3974.1917.ea5. http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.1917.ea5/

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