3 papers
math.OC2019
The Gradient descent method from the perspective of fractional calculus
Pham Viet Hai, Joel A. Rosenfeld
Motivated by gradient methods in optimization theory, we give methods based on -fractional derivatives of order in order to solve unconstrained optimization problems. The co…
math.FA2019
Multi-valued weighted composition operators on Fock space
Pham Viet Hai, Mihai Putinar
Multivalued linear operators, also known as linear relations, are studied on a specific class of weighted, composition transforms on Fock space. Basic properties of this class of l…
math.CV2018
Unbounded Weighted Composition Operators on Fock space
Pham Viet Hai
In this paper, we consider \emph{unbounded} weighted composition operators acting on Fock space, and investigate some important properties of these operators, such as $\calC$-selfa…