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Showing 2011Show all
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math.RA2011★ 3 cited
Hopf algebras of GK-dimension two with vanishing Ext-group
D. -G. Wang, J. J. Zhang, G. Zhuang
We construct and study a family of finitely generated Hopf algebra domains of Gelfand-Kirillov dimension two such that $\Ext^1_H(k,k)=0$. Consequently, we answer a question of…
math.PR2011
On optimality of the barrier strategy for a general Levy risk process
Kam Chuen Yuen, Chuancun Yin
We consider the optimal dividend problem for the insurance risk process in a general Levy process setting. The objective is to find a strategy which maximizes the expected total di…