Class Numbers of Real Quadratic Function Fields of Genus One
β Scribed by Humio Ichimura
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 160 KB
- Volume
- 3
- Category
- Article
- ISSN
- 1071-5797
No coin nor oath required. For personal study only.
β¦ Synopsis
For a prime number p, let β«ήβ¬ p be the finite field of cardinality p and X Ο X p a fixed indeterminate. We prove that for any natural number N, there exist infinitely many pairs ( p, K/β«ήβ¬ p (X )) of a prime number p and a ''real'' quadratic extension K/β«ήβ¬ p (X ) for which the genus of K is one and the class number of the integral closure of β«ήβ¬ p [X ] in K is N.
π SIMILAR VOLUMES
Suppose g > 2 is an odd integer. For real number X > 2, define S g Γ°X Γ the number of squarefree integers d4X with the class number of the real quadratic field QΓ° ffiffiffi d p Γ being divisible by g. By constructing the discriminants based on the work of Yamamoto, we prove that a lower bound S g Γ°X
This paper provides verification procedures for a number of decision problems in quadratic function fields of odd characteristic, thereby establishing membership of these problems in both NP and co-NP. The problems include determining the ideal and divisor class numbers of the field, the regulator o
We show that for a real quadratic field F the dihedral congruence primes with respect to F for cusp forms of weight k and quadratic nebentypus are essentially the primes dividing expressions of the form e kΓ1 ΓΎ AE 1 where e ΓΎ is a totally positive fundamental unit of F . This extends work of Hida.
In this paper we develop two ways of computing special values of zeta function attached to a real quadratic field. Comparing these values we obtain various class number 1 criteria for real quadratic fields of Richaud Degert type.
For a prime number l, let h> J be the class number of the maximal real subfield of the l-th cyclotomic field. For each natural number N, it is plausible but not yet proved that there exist infinitely many prime numbers l with h> J 'N. We prove an analogous assertion for cyclotomic function fields.