Lima, LucéliaBedregal, BenjaminRocha, MarcusCastillo López, AitorFernández Fernández, Francisco JavierBustince Sola, Humberto2022-04-272024-01-2020220165-011410.1016/j.fss.2020.12.007https://academica-e.unavarra.es/handle/2454/42829Nullnorms are aggregation functions which generalize t-norms and t-conorms. For each nullnorm there exists an annihilator element such that, below it, the function behaves like a t-conorm, and, above it, like a t-norm. In this paper, we study some classes of nullnorms which naturally arise from well known classes of t-norms and t-conorms, such as idempotent, Archimedean, cancellative, positive and nilpotent t-norms and t-conorms. We also present the concept of h-pseudo-homogeneous nullnorm and we study when these classes of nullnorms fullfill it.application/pdfeng© 2020 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0T-normsT-conormsNullnormsPseudo-homogeneityinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess