@article{Helbig2025, author = {Helbig, Michael}, title = {Ideals for character Hopf algebras}, journal = {Journal of Pure and Applied Algebra}, volume = {218}, number = {4}, publisher = {Elsevier}, doi = {10.1016/j.jpaa.2013.08.003}, institution = {Fakult{\"a}t f{\"u}r Angewandte Natur- und Geisteswissenschaften}, pages = {634 -- 641}, year = {2025}, abstract = {We give a description in terms of generators and relations of character Hopf algebras. These Hopf algebras play a central role in the classification of pointed Hopf algebras and can be seen as generalized quantum groups. Furthermore, we get as a consequence an analog presentation of Nichols algebras of diagonal type.}, language = {en} }