The application of characteristic methods in Commutative Algebra, which is a synthesis of some areas of Commutative Algebra and Algebraic Geometry.
See also Algebraic Geometry, Commutative Algebra
References
Bruns, W. ``Tight Closure.'' Bull. Amer. Math. Soc. 33, 447-457, 1996.
Huneke, C. ``An Algebraist Commuting in Berkeley.'' Math. Intell. 11, 40-52, 1989.