Journal
S. S. Ahmad and P. Khatun. A Class of generalized shift-splitting preconditioners for double saddle point problems. Applied Mathematics and Computation. 509: No. 129658, 2026.
DOI: https://doi.org/10.1016/j.amc.2025.129658 (Q1, MCQ: 0.7)
S. S. Ahmad and P. Khatun. Structured backward errors of sparse generalized saddle point problems with Hermitian block matrices. Electronic Transactions on Numerical Analysis, 63: 401-423, 2025. DOI:https://doi.org/10.1553/etna_vol63s401 (Q2, MCQ: 0.87)
S. S. Ahmad and P. Khatun. Partial Condition Numbers for Double Saddle Point Problems. Numerical Algorithms, pp 1-30, 2025. DOI:https://doi.org/10.1007/s11075-025-02161 (Q1, MCQ: 1.18)
S. S. Ahmad and P. Khatun. Structured backward errors for special classes of saddle point problems with applications. Linear Algebra and its Applications, 713:90–112, 2025.
DOI: https://doi.org/10.1016/j.laa.2025.03.003 (Q1, MCQ: 0.8)
S. S. Ahmad and P. Khatun. A robust parameterized enhanced shift-splitting preconditioner for three-by-three block saddle point problems. Journal of Computational and Applied Mathematics, 459: pp.116358, 2025.
DOI: https://doi.org/10.1016/j.cam.2024.116358 (Q2, MCQ: 0.85)
S. S. Ahmad and P. Khatun. Condition numbers for the Moore-Penrose inverse and the least squares problem involving rank-structured matrices. Linear and Multilinear Algebra, 73(6): 1159-1195, 2024, DOI: https://doi.org/10.1080/03081087.2024.2410962 (Q1, MCQ: 0.68)
S. S. Ahmad and P. Khatun. Structured condition numbers for a linear function of the solution of the generalized saddle point problem. Electronic Transactions on Numerical Analysis, pp. 471-500, 2024, DOI: https://doi.org/10.1553/etna_vol60s471 (Q2, MCQ: 0.87)
S. S. Ahmad and P. Khatun. Structured Backward Error Analysis for Double Saddle Point Problems.