Linear Algebra, Calculus, Vector analysis, Ordinary differential equation, partial differential equation, Complex analysis, Geometry.

1. Pushpa Akhtar1 · M. M. Touhid Hossain1 · Md. Abdul Alim2 · Mohammad Mokaddes Ali3, 2023, “Magnetohydrodynamic Mixed Convection in a Vertical Rectangular Cavity with Semi-circular Heat Source and Circular Obstacle” Int. J. Appl. Comput. Math, Vol. 9, no. 70, pp. 1-25. 

2. Jamali, A. R. M. Jalal Uddin, Fatima, J. and Pushpa, A., 2017, “Weighted cost opportunity based algorithm for initial basic feasible solution: A new approach in transportation problem”, Journal of Engineering Science, Vol. 8, no. 1, pp. 63-70.

3. A. R. M. Jalal Uddin Jamali and Pushpa Akhtar, “Sequentially Updated Weighted cost opportunity Based Algorithm in Transportation Problem”, GANIT J. Bangladesh Math Soc. (ISSN 1606-3694) 38 (2018) 47-55.