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math.AG2021
On the nearly free simplicial line arrangements with up to lines
Marek Janasz
In the present note we provide a complete classification of nearly free (and not free simultaneously) simplicial arrangements of lines.
math.AG2021★ 9 cited
On plane conic arrangements with nodes and tacnodes
Alexandru Dimca, Marek Janasz, Piotr Pokora
In the present paper, we study arrangements of smooth plane conics having only nodes and tacnodes as the singularities. We provide an interesting estimation on the number of nodes…