Picard群在Q(i,\surd 3)上作用的陪集图
Coset Diagram for the Action of Picard Group on Q(i,\surd3)
摘要:
Picard群Γ是PSL(2,Z[i])。我们定义了皮卡德群的陪集图。在\mathbb{Q}(i)上,Q(i,/surd 3)的某些形式为((a+b/surd 3)/c)的元素及其共轭((a-b/surd 3)/c)在Γ作用于双二次域Q(i,/surd 3)的陪集图中具有不同的符号,这些称为二义数.我们注意到,在陪集图中,Γ作用于\mathbb{Q}(i,/surd 3)的不确定数形成了一个唯一的模式。证明了在轨道Γα中有有限个模糊数,其中α是模糊的,它们构成一条闭路,并且它是轨道Γα中唯一的闭路.本文设计了一个求((a+k/surd ~ 3)/c)型二义数的方法,其中k是正整数。
英文摘要:
The Picard group Γ is PSL(2,Z[i]). We have defined coset diagram for the Picard group. It has been observed that some elements of Q(i,/surd3) of the form ((a+b/surd3)/c) and their conjugates ((a-b/surd3)/c) over \mathbb{Q}(i) have different signs in the coset diagram for the action of Γ on the biquadratic field Q(i,/surd3), these are called ambiguous numbers. We have noticed that ambiguous numbers in the coset diagram for the action of Γ on \mathbb{Q}(i,/surd3) form a unique pattern. It has been shown that there are finite number of ambiguous numbers in an orbit Γα, where α is ambiguous, and they form a closed path and it is the only closed path in the orbit Γα. We have devised a procedure to obtain ambiguous numbers of the form ((a+k/surd3)/c), where k is a positive integer.
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