Counting the solutions of lambda(1)x(1)(k1) + . . . + lambda(t)x(t)(kt) equivalent to c mod n
Counting the solutions of lambda(1)x(1)(k1) + . . . + lambda(t)x(t)(kt) equivalent to c mod n
复制标题
计算 lambda(1)x(1)(k1) 的解。
DOI:
10.1016/j.jnt.2017.10.017
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发表时间:
2018
影响因子:
0.7
通讯作者:
Ouyang Yi
中科院分区:
文献类型:
--
作者:
Li Songsong;Ouyang Yi
Given a polynomial Q (x 1,⋯, x t)= λ 1 x 1 k 1+⋯+ λ t x t k t, for every c∈ Z and n≥ 2, we study the number of solutions N J (Q; c, n) of the congruence equation Q (x 1,⋯, x t)≡ c mod n in (Z/n Z) t such that x i∈(Z/n Z)× for i∈ J⊆ I={1,⋯, t}. We deduce formulas and an algorithm to study N J (Q; c, p a) for p any prime number and a≥ 1 any integer. As consequences of our main results, we completely solve: the counting problem of Q (x i)=∑ i∈ I λ i x i for any prime p and any subset J of I; the counting problem of Q (x i)=∑ i∈ I λ i x i 2 in the case t= 2 for any p and J, and the case t general for any p and J satisfying min{v p (λ i)| i∈ I}= min{v p (λ i)| i∈ J}; the counting problem of Q (x i)=∑ i∈ I λ i x i k in the case t= 2 for any p∤ k and any J, and in the case t general for any p∤ k and J satisfying min{v p (λ i)| i∈ I}= min{v p (λ i)| i∈ J}.