- non-associative rings and algebras
- topological fields
- linear and multilinear algebra
- inequalities
- Boolean lattices
- algebraic varieties
- generalized fields
- algebraic structures
- ordered lattices
- group theory
- extension of a field
- lattices
- associative rings and algebras
- modular lattices
- commutative rings
- fields
- differential and difference algebra
- distributive lattices
- equations ma