alias id "nat" = "cic:/Coq/Init/Datatypes/nat.ind#xpointer(1/1)".
alias symbol "and" (instance 0) = "logical and".
alias symbol "eq" (instance 0) = "leibnitz's equality".
theorem a:\forall x:nat.x=x\land x=x.
intro.
split.
alias id "nat" = "cic:/Coq/Init/Datatypes/nat.ind#xpointer(1/1)".
alias symbol "and" (instance 0) = "logical and".
alias symbol "eq" (instance 0) = "leibnitz's equality".
theorem a:\forall x:nat.x=x\land x=x.
intro.
split.