skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Explore Research Products in the PAR
It may take a few hours for recently added research products to appear in PAR search results.


  • Home
  • Search Results
  • Page 1 of 1

Search for: All records

Creators/Authors contains: "Hai, Pham Viet"

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. ; (, Complex Analysis and Operator Theory)
    Full Text Available 
  2. ; (, Mathematical Methods in the Applied Sciences)
    Motivated by gradient methods in optimization theory, we give methods based onψ‐fractional derivatives of orderαin order to solve unconstrained optimization problems. The convergence of these methods is analyzed in detail. This paper also presents an Adams–Bashforth–Moulton (ABM) method for the estimation of solutions to equations involvingψ‐fractional derivatives. Numerical examples using the ABM method show that the fractional orderαand weightψare tunable parameters, which can be helpful for improving the performance of gradient descent methods. 
    more » « less