Hilbert Functions and Sally Modules
β Scribed by Maria Vaz Pinto
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 277 KB
- Volume
- 192
- Category
- Article
- ISSN
- 0021-8693
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
A number field K is called a Hilbert Speiser field if for each tamely ramified finite abelian extension NΓK the ring of algebraic integers of N, O N , has a normal integral basis over O K , the ring of algebraic integers of K. The classical Hilbert Speiser theorem proves that the field of rational n
The authors consider certain quotients A s RrI of the polynomial ring R s w x K x , . . . , x over an arbitrary field K. They first determine upper and lower 1 r bounds on the Hilbert functions of any algebra having the form A s RrV, where Ε½ . V is the largest ideal of R agreeing in degrees at least
It is well known that a polynomial in one variable is completely determined by its zeros (counting multiplicities). We generalize this result to an ideal of polynomials in several variables by introducing the characteristic spaces of the ideal. One finds that the ideal is completely determined by it