{"version":"1.0","type":"link","title":"Rvachev function - Newikis","description":"In mathematics, an R-function, or Rvachev function, is a real-valued function whose sign does not change if none of the signs of its arguments change; that is, its sign is determined solely by the signs of its arguments.","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}