Robuta

https://www.arxiv.org/abs/2004.07149
Abstract page for arXiv paper 2004.07149: Cohomology rings of finite-dimensional pointed Hopf algebras over abelian groups
finite dimensionalhopf algebrascohomologyringspointed
https://scirp.org/journal/papercitationdetails?paperid=75432&JournalID=586
full rankabelian groupsnonfactorizationfinite
https://arxiv.org/abs/2209.03944
Abstract page for arXiv paper 2209.03944: The Amalgamation Property for automorphisms of ordered abelian groups
amalgamation propertyautomorphismsorderedabelian