Homomorphisms of the group $$L^1_s$$ into the group $$L^1_r$$ for r ≤ 3

Abstract

Homomorphisms of the group L 1 s into the group L 1 r for r ≤ 3Wojciech Jab loński Summary. We determine all homomorphisms of the differential group L 1 s with arbitrary s ≥ 2 into the group L 1 r for r ≤ 3.