On nondecomposable positive definite Hermitian forms over imaginary quadratic fields

来源 :中国科学:数学英文版 | 被引量 : 0次 | 上传用户:cxr349150
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Methods are presented for the construction of nondecomposable positive definite integral Hermitian forms over the ring of integers Rm of an imaginary quadratic field Q(-m). Using our methods, one can construct explicitly an n-ary nondecomposable positive
其他文献
Chain graph (CG) is a general model of graphical Markov models. Some different chain graphs may describe the same conditional independence structure, then we sa
Sernirings which are a disjoint union of rings form a variety S which contains the variety of all rings and the variety of all idempotent sernirings, and in par
Homoclinic bifurcations in four-dimensional vector fields are investigated by setting up a local coordinate near a homoclinic orbit. This homoclinic orbit is pr
In this paper, a type of combinatorial design (called difference packing array)is proposed and used to give a construction of systematic authentication codes. T
In this paper, the author establishes the embedding theorems for different metrics of inhomoge-neous Besov and Triebel-Lizorkin spaces on spaces of homogeneous
This paper presents an algorithm to reduce a nonlinear algebraic partial differential equation system into the involutive characteristic set with respect to an
Necessary and sufficient condition on real quadratic algebraic function fields K is given for theirideal class groups H(K) to contain cyclic subgroups of order
The three-dimensional transition of the wake flow behind a circular cylinder is studied in detail by direct numerical simulations using 3D incompressible N-S eq
In this paper, we investigate the persistence of invariant tori for the nearly integrable Hamiltonian system H(x, y) =h(y) + εp((x), y) + ε2Q(x, (y)), whereh(
Let V be a hypersurface with an isolated singularity at the origin in Cn+1. It is a natural question to ask when V is defined by weighted homogeneous polynomial