# LODOConvertions(Coeff, Ab, R)¶

convert(l1) converts an operator l1 from LinearOrdinaryDifferentialOperator1 to LinearOrdinaryDifferentialOperator3 such that the resultant operator gives the same result as the original one on application to an element of domain R.
convert(l3) converts an operator l3 from LinearOrdinaryDifferentialOperator3 to LinearOrdinaryDifferentialOperator1 such that the resultant operator gives the same result as the original one on application to an element of domain R.