Focusing on a particular case, we will show that one can explicitly determine the quartic fields \(\mathbf{K}\) that have ideal class groups of exponent \(\leqslant 2\), provided that \(\mathbf{K} / \mathbf{Q}\) is not normal, provided that \(\mathbf{K}\) is a quadratic extension of a fixed imaginar
The Action of the Symplectic Group Associated with a Quadratic Extension of Fields
β Scribed by Claudio G. Bartolone; M.Alessandra Vaccaro
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 233 KB
- Volume
- 220
- Category
- Article
- ISSN
- 0021-8693
No coin nor oath required. For personal study only.
β¦ Synopsis
Given a quadratic extension L/K of fields and a regular alternating space V f of finite dimension over L, we classify K-subspaces of V which do not split into the orthogonal sum of two proper K-subspaces. This allows one to determine the orbits of the group Sp L V f in the set of K-subspaces of V .
π SIMILAR VOLUMES
The maximal unramified extensions of the imaginary quadratic number fields with class number two are determined explicitly under the Generalized Riemann Hypothesis.
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
Let Do0 be the fundamental discriminant of an imaginary quadratic field, and hΓ°DΓ its class number. In this paper, we show that for any prime p > 3 and e ΒΌ Γ1; 0; or 1, ] ΓX oDo0 j hΓ°DΓc0 Γ°mod pΓ and D p ΒΌ e 4 p ffiffiffiffi X p log X :