Bichromatic Perfect Matchings with Crossings

التفاصيل البيبلوغرافية
العنوان: Bichromatic Perfect Matchings with Crossings
المؤلفون: Aichholzer, Oswin, Felsner, Stefan, Paul, Rosna, Scheucher, Manfred, Vogtenhuber, Birgit
سنة النشر: 2023
المجموعة: Computer Science
Mathematics
مصطلحات موضوعية: Computer Science - Computational Geometry, Mathematics - Combinatorics
الوصف: We consider bichromatic point sets with $n$ red and $n$ blue points and study straight-line bichromatic perfect matchings on them. We show that every such point set in convex position admits a matching with at least $\frac{3n^2}{8}-\frac{n}{2}+c$ crossings, for some $ -\frac{1}{2} \leq c \leq \frac{1}{8}$. This bound is tight since for any $k> \frac{3n^2}{8} -\frac{n}{2}+\frac{1}{8}$ there exist bichromatic point sets that do not admit any perfect matching with $k$ crossings.
Comment: Appears in the Proceedings of the 31st International Symposium on Graph Drawing and Network Visualization (GD 2023)
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2309.00546
رقم الأكسشن: edsarx.2309.00546
قاعدة البيانات: arXiv