Betweenness relation and isometric imbeddings of metric spaces

• Дата: 2009
• Автори: Dovgoshei, A. A., Dordovskii, D. V., Довгошей, А. А., Дордовский, Д. В.
• Формат: Стаття
• Мова: Російська; Англійська
• Опубліковано: Institute of Mathematics, NAS of Ukraine 2009
• Онлайн доступ: https://umj.imath.kiev.ua/index.php/umj/article/view/3103
• Назва журналу: Ukrains’kyi Matematychnyi Zhurnal

We give an elementary proof of the classical Menger result according to which any metric space X that consists of more than four points is isometrically imbedded into \( \mathbb{R} \) if every three-point subspace of X is isometrically imbedded into \( \mathbb{R} \). A series of corollaries of this...