Сommunities of Myrica gale L. (sweet gale), their ecology and geography in coastal mires the Gulf Finland within St. Petersburg Leningrad Region on Southeastern border range are described based 70 relevés, made 1981–2018. This species is included Red Data Books Russia (2008), (2018), Republic Karelia (2007). The distribution communities studied area as follows (Fig. 1) — Yuntolovskiy reserve (t...

The Gale-Hoffman inequalities characterize feasible external flow in a (capacitated) network. Among these inequalities, those that are redundant can be identified through a simple arc-connectedness criterion.