reserve i,j,k,n,m,l,s,t for Nat;
reserve a,b for Real;
reserve F for real-valued FinSequence;
reserve z for Complex;
reserve x,y for Complex;
reserve r,s,t for natural Number;

theorem
  n <> 0 implies (n+1)/n > 1
proof
  assume
A1: n<>0;
  (n+1)/n=n/n+1/n by XCMPLX_1:62
    .=1+1/n by A1,XCMPLX_1:60;
  hence thesis by A1,XREAL_1:29;
end;
