logic escapes problems standard unary deontic logic subject problems variations many varieties deontic logic developed including non monotonic deontic logics paraconsistent deontic logics dynamic deontic logics history early deontic logic philosophers indian mimamsa school ancient greece remarked formal logical relations deontic concepts ref name greece huisjes c h norms logic thesis university groningen ref philosophers late middle ages compared deontic concepts alethic ones ref name ones ref ''elementa juris naturalis'' written
Humanities Philosophy Logic Deontic Logic