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math.CO2024
Partitioning the projective plane to two incidence-rich parts
Zoltán Lóránt Nagy
An internal or friendly partition of a vertex set of a graph is a partition to two nonempty sets such that every vertex has at least as many neighbours in its…
math.CO2024
Complete -term arithmetic progression free sets of small size in vector spaces and other abelian groups
Bence Csajbók, Zoltán Lóránt Nagy
A subset of an abelian group is called - free if it does not contain a three term arithmetic progression. Moreover, is called complete -…