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# A method of estimating the p-adic sizes of common zeros of partial derivative polynomials associated with a complete cubic form

## Citation

Aminudin, Siti Syaheera and Sapar, Siti Hasana and Mohd Atan, Kamel Ariffin (2013) A method of estimating the p-adic sizes of common zeros of partial derivative polynomials associated with a complete cubic form. In: International Conference on Mathematical Sciences and Statistics 2013 (ICMSS2013), 5-7 Feb. 2013, Kuala Lumpur, Malaysia. (pp. 205-212).

## Abstract / Synopsis

Let x =(x1,x2,…,xn) be a vector in the space Q n with Q field of rational numbers and q be a positive integer, f a polynomial in x with coefficient in Q. The exponential sum associated with f is defined as S(f;q)=Σxmodqe((2if(x))/q), where the sum is taken over a complete set of residues modulo q. The value of S(f;q) depends on the estimate of cardinality |V|, the number of elements contained in the set V={xmodq|fx≡0modq} where fx is the partial derivative of f with respect to x. To determine the cardinality of V, the p-adic sizes of common zeros of the partial derivative polynomials need to be obtained. In this paper, we estimate the p-adic sizes of common zeros of partial derivative polynomials of f(x,y) in Qp[x,y] with a complete cubic form by using Newton polyhedron technique. The polynomial is of the form f(x,y)=ax3+bx2y+cxy2+dy3+32ax2+bxy+12cy2+sx+ty+k.

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## Additional Metadata

Item Type: Conference or Workshop Item (Paper) Faculty of ScienceInstitute for Mathematical Research https://doi.org/10.1007/978-981-4585-33-0_21 Springer Singapore Exponential sums; Cardinality; P-adic sizes; Newton polyhedron Nursyafinaz Mohd Noh 28 Oct 2015 11:37 24 Aug 2017 16:37 http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/978-981-4585-33-0_21 http://psasir.upm.edu.my/id/eprint/41157 View Download Statistic

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