Exact bivariate polynomial factorization over ℚ by approximation of roots

2014 ◽  
Vol 28 (1) ◽  
pp. 243-260 ◽  
Author(s):  
Yong Feng ◽  
Wenyuan Wu ◽  
Jingzhong Zhang ◽  
Jingwei Chen
2018 ◽  
Vol 12 (1) ◽  
pp. 166-177
Author(s):  
Ivan Pavkov ◽  
Nebojsa Ralevic ◽  
Ljubo Nedovic

A necessary and sufficient condition for the existence of a non-trivial factorization of an arbitrary bivariate polynomial with integer coefficients was presented in [2]. In this paper we develop an efficient algorithm for factoring bivariate polynomials with integer coefficients. Also, we shall give a proof of the optimality of the algorithm. For a given codeword, formed by mixing up two codewords, the algorithm recovers those codewords directly by factoring corresponding bivariate polynomial. Our algorithm determines uniquely the given polynomials which are used in forming the mixture of two codewords.


2014 ◽  
Vol 57 (10) ◽  
pp. 2123-2142 ◽  
Author(s):  
WenYuan Wu ◽  
JingWei Chen ◽  
Yong Feng

2020 ◽  
Vol 14 (1) ◽  
pp. 293-306
Author(s):  
Claire Delaplace ◽  
Alexander May

AbstractWe give a 4-list algorithm for solving the Elliptic Curve Discrete Logarithm (ECDLP) over some quadratic field 𝔽p2. Using the representation technique, we reduce ECDLP to a multivariate polynomial zero testing problem. Our solution of this problem using bivariate polynomial multi-evaluation yields a p1.314-algorithm for ECDLP. While this is inferior to Pollard’s Rho algorithm with square root (in the field size) complexity 𝓞(p), it still has the potential to open a path to an o(p)-algorithm for ECDLP, since all involved lists are of size as small as $\begin{array}{} p^{\frac 3 4}, \end{array}$ only their computation is yet too costly.


1972 ◽  
Vol 60 (4) ◽  
pp. 471-471
Author(s):  
A.M. Davis ◽  
E. Mastascusa ◽  
W. Rave ◽  
B. Turner

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