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math.CO2013
On some generalization of the Möbius configuration
Krzysztof Petelczyc
The Möbius configuration is generalized in a purely combinatorial approach. We consider configurations ${\goth M}_{(n,φ)}$ depending on a permutation in the sy…
math.CO2013
The complement of a point subset in a projective space and a Grassmann space
Mariusz Żynel, Krzysztof Petelczyc
In a projective space we fix some set of points, a horizon, and investigate the complement of that horizon. We prove, under some assumptions on the size of lines, that the ambient…