1-8 of 8 Books

Groups, Difference Sets, and the Monster
By K. T. Arasu

Difference Schemes with Operator Factors
By A. A. Samarskii

Boundary value problems and symplectic algebra for ordinary differential and quasi-differential operators
By W. N. Everitt
Galois theories of linear difference equations
Galois theories of linear difference equations
By Charlotte Hardouin