alias symbol "eq" (instance 0) = "Coq's leibnitz's equality".
alias symbol "plus" (instance 0) = "Coq's natural plus".
alias id "plus_n_O" = "cic:/Coq/Init/Peano/plus_n_O.con".
alias symbol "eq" (instance 0) = "Coq's leibnitz's equality".
alias symbol "plus" (instance 0) = "Coq's natural plus".
alias id "plus_n_O" = "cic:/Coq/Init/Peano/plus_n_O.con".