DSA Volume 30, 2021, Issue 9

N. G. Medhin and Lynesia Taylor (1400-1419)
A Portfolio Rebalancing Problem

Liangping Qi and Rong Yuan (1421-1433)
Factorization of Scalar Piecewise Continuous Almost Periodic Functions

Dongdong Gao, Jianli Li, and Armin Hadjian (1435-1447)
New Results for Impulsive Fourth-Order Differential Equations

Xuping Zhang, Youhui Su, and Yibo Kong (1449-1461)
Positive Solutions for Boundary Value Problem of Fractional Differential Equation in Banach Spaces.

Yan Sun and Chenglin Zhao (1463-1478)
Fixed Point Results for Multi-Valued Mappings in G Metric Spaces

Ahmed Alsaedi, Amal Almalki, Sotiris K. Ntouyas, Bashir Ahmad, and Ravi P. Agarwal (1479-1501)
Existence Results for a Self-Adjoint Coupled System of Nonlinear Ordinary Differential Equations with Nonlocal Non-Separated Integral Boundary Conditions

D. Anandakumar, S. Palaniammal and N. Nagaveni (1503 – 1518)
The Analysis of M|M(A,B)|1 on Unobservable and Partially Observable Waiting Line With Repeated Vacations

B. Praba and M. Logeshwari (1519 – 1544)
Wiener Index of Rough Co-Zero Divisor Graph of a Rough Semiring