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math.CO2026
Simplicial arrangements in real projective three-space revisited
Marek Janasz, Piotr Pokora
In this paper we study irreducible simplicial arrangements of projective planes in from combinatorial and projective geometry viewpoints. We first form…
math.AG2026
On the boundedness of some real line arrangements of type at most one
Marek Janasz
In this note, we show that real line arrangements of type at most one, admitting only intersection points of multiplicity at most five, satisfy certain boundedness properties. In p…