TY - JOUR U1 - Wissenschaftlicher Artikel A1 - Helbig, Michael T1 - Ideals for character Hopf algebras JF - Journal of Pure and Applied Algebra N2 - 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. AB - 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. Y1 - 2025 U6 - https://doi.org/10.1016/j.jpaa.2013.08.003 DO - https://doi.org/10.1016/j.jpaa.2013.08.003 VL - 218 IS - 4 SP - 634 EP - 641 PB - Elsevier ER -