Thomas Elsken2026-03-222026-03-22200210.12775/tmna.2002.009https://doi.org/10.12775/tmna.2002.009https://andeanlibrary.org/handle/123456789/65032We develop a nonstandard description of Retarded Functional Differential Equations which consist of a formally finite iteration of vectors. We present two applications where the new description gives explicit formulae. The classical approach in these cases only offers a method to construct the solution.enMathematicsConstruct (python library)Differential equationApplied mathematicsDifferential (mechanical device)Mathematical analysisAlgebra over a fieldPure mathematicsCalculus (dental)article