TY - JOUR AU - Garcia Martinez, Xabier AU - Tsishyn, M. AU - Van der Linden, T. AU - Vienne, C. PY - 2021 SN - 00130915 SN - 14643839 UR - http://hdl.handle.net/11093/2701 AB - Just like group actions are represented by group automorphisms, Lie algebra actions are represented by derivations: up to isomorphism, a split extension of a Lie algebra B by a Lie algebra X corresponds to a Lie algebra morphism B→Der(X) from B... LA - eng PB - Proceedings of the Edinburgh Mathematical Society TI - Algebras with representable representations DO - 10.1017/S0013091521000304 ER -