Generalizations of the Markoff–Hurwitz equations over finite fields
Generalizations of the Markoff–Hurwitz equations over finite fields
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DOI:
10.1016/j.jnt.2005.08.009
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发表时间:
2006-05
影响因子:
0.7
通讯作者:
Ioulia N. Baoulina
中科院分区:
文献类型:
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作者:
Ioulia N. Baoulina
Let Nqbe the number of solutions of the equation over the finite field [Formula: see text] . L. Carlitz found formulas for Nqfor n=3 and for n=4 and q≡3(mod4). He also expressed Nqfor n=4 and q≡1(mod4) in terms of Jacobsthal sums. In an earlier paper, we found formulas for Nqwhen d=gcd(n−2,(q−1)/2)=1 or 2. In this paper, we find formulas for Nqwhen d=4 and p≢7(mod8); and when there exists an l such that pl≡−1(mod2d).