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arXiv 1507.03029math.AG
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有限域上齐次多项式方程组的解的个数

Number of Solutions of Systems of Homogeneous Polynomial Equations over Finite Fields

Mrinmoy Datta, Sudhir R. Ghorpade

摘要:

本文考虑有限域上线性无关的多元齐次多项式组在该域上的射影空间中公共零点的最大数目的确定问题。Tsfasman和Boguslavsky有一个精心设计的猜想,预测当齐次多项式具有与有限域的大小相比不太大的相同次数时的最大值。我们表明,这个猜想持有肯定的,如果多项式的数量不超过变量的总数。这分别扩展了Serre(1991)和Boguslavsky(1997)关于一个和两个多项式的结果。此外,它补充了我们最近的结果,即猜想是假的,在一般情况下,如果多项式的数量超过变量的总数。

英文摘要:

We consider the problem of determining the maximum number of common zeros in a projective space over a finite field for a system of linearly independent multivariate homogeneous polynomials defined over that field. There is an elaborate conjecture of Tsfasman and Boguslavsky that predicts the maximum value when the homogeneous polynomials have the same degree that is not too large in comparison to the size of the finite field. We show that this conjecture holds in the affirmative if the number of polynomials does not exceed the total number of variables. This extends the results of Serre (1991) and Boguslavsky (1997) for the case of one and two polynomials, respectively. Moreover, it complements our recent result that the conjecture is false, in general, if the number of polynomials exceeds the total number of variables.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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