A lower bound for proportion of visibility polygon's surface to entire polygon's surface: Estimated by Art Gallery Problem and proven that cannot be greatly improved

Lubomír Stepánek, Filip Habarta, Ivana Malá, Lubos Marek. A lower bound for proportion of visibility polygon's surface to entire polygon's surface: Estimated by Art Gallery Problem and proven that cannot be greatly improved. In Maria Ganzha, Leszek A. Maciaszek, Marcin Paprzycki, Dominik Slezak, editors, Proceedings of the 18th Conference on Computer Science and Intelligence Systems, FedCSIS 2023, Warsaw, Poland, September 17-20, 2023. Volume 35 of Annals of Computer Science and Information Systems, pages 1229-1233, 2023. [doi]