@misc{10481/85313, year = {2022}, month = {11}, url = {https://hdl.handle.net/10481/85313}, abstract = {We call an algebra A commutator-simple if [A, A] does not contain nonzero ideals of A. After providing several examples, we show that in these algebras derivations are determined by a condition that is applicable to the study of local derivations. This enables us to prove that every continuous local derivation D : L1(G) → L1(G), where G is a unimodular locally compact group, is a derivation. We also give some remarks on homomorphism-like maps in commutator-simple algebras.}, organization = {MCIN/AEI/ 10.13039/50110001103 Grant PID2021-122126NB-C31}, organization = {“ERDF A way of making Europe”}, organization = {Junta de Andalucía FQM-185}, organization = {Slovenian Research Agency (ARRS) Grant P1-0288}, organization = {MIU: FPU18/00419}, publisher = {American Mathematical Society}, keywords = {Derivation}, keywords = {Automorphism}, keywords = {Antiautomorphism}, keywords = {Jordan auto-morphism}, keywords = {Local derivation}, keywords = {Local automorphism}, keywords = {Group algebra}, title = {Derivations and homomorphisms in commutator-simple algebras}, doi = {10.1090/proc/16483}, author = {Alaminos Prats, Jerónimo and Brešar, Matej and Extremera Lizana, José and Castillo Godoy, María Luisa and Villena Muñoz, Armando Reyes}, }