Abstract:
Upper bounds are found for the characteristic function of a homogeneous polynomial ideal $I$; such estimates were previously known only for a radical ideal $I$. An analog of the first Bertini theorem for primary decompositions is formulated and proved. Also, a new representation for primary ideals and modules is introduced and used, which is convenient from an algorithmic point of view.
Keywords:
Characteristic function of an ideal, first Bertini theorem, Hilbert functions.
Citation:
A. L. Chistov, “Inequalities for Hilbert functions and primary decompositions”, Algebra i Analiz, 19:6 (2007), 143–172; St. Petersburg Math. J., 19:6 (2008), 975–994