2 papers
math.CO2024
The maximum number of digons formed by pairwise crossing pseudocircles
Eyal Ackerman, Gábor Damásdi, Balázs Keszegh +2
In 1972, Branko Grünbaum conjectured that any arrangement of pairwise crossing pseudocircles in the plane can have at most digons (regions enclosed by exactly two pseu…
math.CO2024
On the number of digons in arrangements of pairwise intersecting circles
Eyal Ackerman, Gábor Damásdi, Balázs Keszegh +2
A long-standing open conjecture of Branko Grünbaum from 1972 states that any simple arrangement of pairwise intersecting pseudocircles in the plane can have at most digo…