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Projective embedding of projective spaces

Authors: Kreuzer, Alexander;

Projective embedding of projective spaces

Abstract

The author studies embeddings \(\phi:M \rightarrow P\) from a linear space \(M\) in a linear space \(P\). Examples of embeddings with \(\dim M >\dim P\) are given, but the author also focusses on conditions on embeddings such that \(\dim M=\dim P\). He introduces two properties (\textbf{G}) and (\textbf{E}) and he also describes a condition called the \textit{exchange condition}. Linear spaces satisfying conditions (\textbf{G}) and (\textbf{E}) are called \textit{locally complete}. It is then shown that a locally complete embedding of a linear space \(M\) in a linear space \(P\) which satisfies the exchange condition, satisfies \(\dim M=\dim P\). To conclude the article, the author constructs an example of an embedding \(\phi\) of an \(m\)-dimensional Pappian projective space into an \(n\)-dimensional Pappian projective space with \(m>n\) that maps any \(n+1\) independent points onto \(n+1\) independent points, and which, for \(n \geq 3\), satisfies property (\textbf{E}).

Keywords

Projective spaces, projective spaces, Combinatorial structures in finite projective spaces, Other finite linear geometries, embeddings, 51E20, linear spaces

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
Green
hybrid