alias num (instance 0) = "natural number".
alias symbol "eq" (instance 0) = "Coq's leibnitz's equality".
alias id "not" = "cic:/Coq/Init/Logic/not.con".
alias num (instance 0) = "natural number".
alias symbol "eq" (instance 0) = "Coq's leibnitz's equality".
alias id "not" = "cic:/Coq/Init/Logic/not.con".