On some formula in connected cocommutative Hopf algebras over a field of characteristic 0
Volume 83 / 2000
Colloquium Mathematicum 83 (2000), 271-279
DOI: 10.4064/cm-83-2-271-279
Abstract
Let H be a cocommutative connected Hopf algebra, where K is a field of characteristic zero. Let $H^{+} = Ker