Special issue on effective methods in algebraic computation

The international conference MEGA (Effective Methods in Algebraic Geometry) is a biennial conference, devoted to computational aspects and applications of Algebraic Geometry. With a tradition dating back to 1990, it has become an important event for the community, showing the strong research activity developed on effective methods and theoretical and practical complexity issues in commutative algebra, geometry, real geometry, algebraic number theory, algebraic geometry, arithmetic geometry, and related fields. [..] The current issue of the Journal of Symbolic Computation is devoted to selected contributions related to the topics of MEGA.