4 papers
Subnormal subgroups of almost locally simple artinian algebras with involutions
Dau Thi Hue, Huynh Viet Khanh, Bui Xuan Hai
In this paper, we investigate subnormal subgroups of the multiplicative group of an almost locally simple artinian algebra with involution. In particular, we show that if either th…
Locally Lipschitz stability of solutions to a parametric parabolic optimal control problem with mixed pointwise constraints
Huynh Khanh
A class of parametric optimal control problems governed by semilinear parabolic equations with mixed pointwise constraints is investigated. The perturbations appear in the objectiv…
Regularity of multipliers and second-order optimality conditions of KKT-type for semilinear parabolic control problems
Huynh Khanh, Bui Trong Kien
A class of optimal control problems governed by semilinear parabolic equations with mixed constraints and a box constraint for control variable is considered. We show that if the s…
Multiplicative groups of Leavitt path algebras
Bui Xuan Hai, Huynh Viet Khanh
In this paper, we prove that the multiplicative group of a unital non-commutative Leavitt path algebra and Cohn path algebra contain a non-cyclic free subgroup, p…