On S 3 -equivariant homology. Elhamdadi, Mohamed — 2001 International Journal of Mathematics and Mathematical Sciences
On the Steenrod operations in cyclic cohomology. Elhamdadi, Mohamed; Gouda, Yasien Gh. — 2003 International Journal of Mathematics and Mathematical Sciences
Twisted quandle homology theory and cocycle knot invariants. Carter, J.Scott; Elhamdadi, Mohamed; Saito, Masahico — 2002 Algebraic & Geometric Topology
Homology theory for the set-theoretic Yang-Baxter equation and knot invariants from generalizations of quandles J. Scott Carter; Mohamed Elhamdadi; Masahico Saito — 2004 Fundamenta Mathematicae A homology theory is developed for set-theoretic Yang-Baxter equations, and knot invariants are constructed by generalized colorings by biquandles and Yang-Baxter cocycles.