{"version":"1.0","type":"link","title":"Regular open set - Newikis","description":"A subset of a topological space is called a regular open set if it is equal to the interior of its closure; expressed symbolically, if or, equivalently, if where and denote, respectively, the interior, closure and boundary of","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}