Straight line arrangements in the real projective plane
- Cite this article as:
- Forge, D. & Alfonsín, J.L.R. Discrete Comput Geom (1998) 20: 155. doi:10.1007/PL00009373
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Let A be an arrangement of n pseudolines in the real projective plane and let p3(A) be the number of triangles of A. Grünbaum has proposed the following question. Are there infinitely many simple arrangements of straight lines with p3(A)=1/3n(n−1)? In this paper we answer this question affirmatively.