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math.CO2026
Line arrangements, bounded cells, and discrepancy
Imre Bárány
An arrangement of lines in the plane defines cells, i.e., connected components of the complement of the arrangement. Answering a question of Volkmar Welker we show that, apart…
math.CO2026
The Volume Helly Theorem in the plane, colorful version
Imre Bárány, Bobby Miraftab, Leonidas Theocharous
We prove a colorful volume Helly theorem for convex sets in : There is a constant such that if are fini…
math.CO2026
The integer hull of the set
Antal Balog, Imre Bárány
The integer convex hull of the set is the convex hull of the lattice points in . The vertices of lie in the square $…