{"version":"1.0","type":"link","title":"Star height problem - Newikis","description":"In formal language theory, the star height problem is the question whether all regular languages can be expressed using regular expressions of limited star height, i.e. with a limited nesting depth of Kleene stars. Specifically, is a nesting depth of one always sufficient? If not, is there an…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}