Moraschini, TommasoRaftery, James G.Wannenburg, Johann Joubert2022-04-292022-04-292021-01Moraschini, T., Raftery, J.G. & Wannenburg, J.J. Epimorphisms in varieties of subidempotent residuated structures. Algebra universalis 82, 6 (2021). https://doi.org/10.1007/s00012-020-00694-2.0002-5240 (print)1420-8911 (online)10.1007/s00012-020-00694-2https://repository.up.ac.za/handle/2263/84961Please read abstract in the article.en© 2021, Springer Nature Switzerland AG. The original publication is available at : https://link.springer.com/journal/12 [12 months embargo]EpimorphismResiduated latticeBrouwerian algebraHeyting algebraDe Morgan monoidEsakia spaceSubstructural logicsRelevance logicBeth definabilityPostprint Article