Hasse polynomials of L-functions of certain exponential sums
Hasse polynomials of L-functions of certain exponential sums
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DOI:
10.1016/j.ffa.2020.101736
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发表时间:
2020-03
期刊:
影响因子:
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通讯作者:
Chao Chen
中科院分区:
文献类型:
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作者:
Chao Chen
In this paper, we focus on computing the higher slope Hasse polynomials of L-functions of certain exponential sums associated to the following family of Laurent polynomials f (x 1,…, x n+ 1)=∑ i= 1 n a i x n+ 1 (x i+ 1 x i)+ a n+ 1 x n+ 1+ 1 x n+ 1, where a i∈ F q⁎, i= 1, 2,…, n+ 1. We find a simple formula for the Hasse polynomial of the slope one side and study the irreducibility of these Hasse polynomials. We will also provide a simple form of all the higher slope Hasse polynomials for n= 3, answering an open question of Zhang and Feng.