Projective covers in certain categories of topological spaces
Banaschewski, B.
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Banaschewski, B.
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Govaerts, W.
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Zvyagina, M.B. (2005)
Zapiski Nauchnykh Seminarov POMI
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Goddard, Mark A. (1996)
International Journal of Mathematics and Mathematical Sciences
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Andrzej Owsiejczuk (2007)
Formalized Mathematics
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In the paper I construct the configuration G which is a partial linear space. It consists of k-element subsets of some base set as points and (k + 1)-element subsets as lines. The incidence is given by inclusion. I also introduce automorphisms of partial linear spaces and show that automorphisms of G are generated by permutations of the base set.