{"version":"1.0","type":"link","title":"Polytree - Newikis","description":"In mathematics, and more specifically in graph theory, a polytree (also called directed tree, oriented tree or singly connected network) is a directed acyclic graph whose underlying undirected graph is a tree. In other words, a polytree is formed by assigning an orientation to each edge of a…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/6/61/Polytree.svg/1280px-Polytree.svg.png","thumbnail_width":1280,"thumbnail_height":945}