40 citations · 150 across the 28 of their papers we have counts for
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math.RA2016
On the flatness and the projectivity over Hopf subalgebras of Hopf algebras over discrete valuation rings
Nguyen Dai Duong, Phung Ho Hai, Nguyen Huy Hung
We study the flatness and the projectivity of Hopf algebras, defined over a Dedekind ring, over their Hopf subalgebras. We give a criterion for the faithful flatness and use it to…
math.RA2015★ 2 cited
On an injectivity lemma in the proof of Tannakian duality
Phùng Hô Hai
In this short work we give a very short and elementary proof of the injectivity lemma, which plays an important role in the Tannakian duality for Hopf algebras over a field. Based…