A computational algorithm for solving periodic penta-diagonal linear systems. - A. A. Karawia 001 (Appl. Math. Comput., 2006)

Inversion of general tridiagonal matrices. - Moawwad E. A. El-Mikkawy; Abdelrahman A. Karawia (Appl. Math. Lett., 2006)

An alternative computational algorithm for calculating the nonlinearity of regression models with two parameters. - S. A. El-Shehawy; A. A. Karawia 001 (Appl. Math. Comput., 2007)

Two algorithms for solving comrade linear systems. - A. A. Karawia 001 (Appl. Math. Comput., 2007)

Two algorithms for solving a general backward tridiagonal linear systems. - A. A. Karawia 001 (Appl. Math. Comput., 2007)

The use of the Sherman-Morrison-Woodbury formula to solve cyclic block tri-diagonal and cyclic block penta-diagonal linear systems of equations. - Milan Batista; Abdel Rahman A. Ibrahim Karawia (Appl. Math. Comput., 2009)

A New Algorithm for Inverting General Cyclic Heptadiagonal Matrices Recursively - A. A. Karawia 001 (CoRR, 2010)

On the Inverse Of General Cyclic Heptadiagonal and Anti-Heptadiagonal Matrices - A. A. Karawia 001 (CoRR, 2010)

Two algorithms for solving general backward pentadiagonal linear systems. - A. A. Karawia 001 (Int. J. Comput. Math., 2010)

Symbolic algorithm for solving comrade linear systems based on a modified Stair-Diagonal Approach. - A. A. Karawia 001 (Appl. Math. Lett., 2013)

A New Algorithm for General Cyclic Heptadiagonal Linear Systems using Sherman-Morrison-Woodbury formula. - A. A. Karawia 001 (Ars Comb., 2013)

New Symbolic Algorithms For Solving A General Bordered Tridiagonal Linear System - A. A. Karawia 001 (CoRR, 2013)

On Solving Pentadiagonal Linear Systems via Transformations. - A. A. Karawia 001 (CoRR, 2014)

On the Inverting of A General Heptadiagonal Matrix. - A. A. Karawia 001 (CoRR, 2014)

On the Inverse Of General Cyclic Heptadiagonal Matrices. - A. A. Karawia 001 (Ars Comb., 2016)

A New Recursive Algorithm For Inverting A General Comrade Matrix. - A. A. Karawia 001 (Ars Comb., 2017)

Encryption Algorithm of Multiple-Image Using Mixed Image Elements and Two Dimensional Chaotic Economic Map. - A. A. Karawia 001 (Entropy, 2018)

Cryptographic algorithm based on pixel shuffling and dynamical chaotic economic map. - Sameh S. Askar; Abdelrahman A. Karawia; Fatmah S. Alammar (IET Image Process., 2018)

An Algorithm of Image Encryption Using Logistic and Two-Dimensional Chaotic Economic Maps. - Sameh S. Askar; Abdelrahman A. Karawia; Abdulrahman Al-Khedhairi; Fatemah S. Al-Ammar (Entropy, 2019)

Image encryption based on Fisher-Yates shuffling and three dimensional chaotic economic map. - Abdelrahman A. Karawia (IET Image Process., 2019)

An Image Encryption Algorithm Based on Bisection Method and One-Dimensional Piecewise Chaotic Map. - Aesha N. Elghandour; Ahmed M. Salah; Yasser A. Elmasry; Abdelrahman A. Karawia (IEEE Access, 2021)

New Encryption Algorithm Using Bit-Level Permutation and Non-Invertible Chaotic Map. - Abdelrahman A. Karawia; Yasser A. Elmasry (IEEE Access, 2021)

Cryptographic Algorithm Using Newton-Raphson Method and General Bischi-Naimzadah Duopoly System. - Abdelrahman A. Karawia (Entropy, 2021)

Medical image steganographic algorithm via modified LSB method and chaotic map. - A. A. Karawia 001 (IET Image Process., 2021)

A Hybrid Numerical Algorithm for Evaluating n-th Order Tridiagonal Determinants. - Moawwad El-Mikkawy; Abdelrahman A. Karawia (CoRR, 2022)

A Breakdown Free Numerical Algorithm for Inverting General Tridiagonal Matrices. - Moawwad El-Mikkawy; Abdelrahman A. Karawia (CoRR, 2022)