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.
On Quadratic Subextensions of Ray Class Fields of Quadratic Fields mod p
β Scribed by Fuminori Kawamoto
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 290 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0022-314X
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β¦ Synopsis
Let F be a quadratic field and p a prime ideal in F. Then we ask whether the ray class field of F mod p has a normal integral basis over F. We see many differences between our case and the case where the base field F is the field of rational numbers.
π SIMILAR VOLUMES
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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
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