Zhonggang Zeng  
Bernard J. Brommel Distinguished Research Professor of NEIU
Professor of Mathematics


Office: 218D,
 Science Building,    Phone: (773)442-5763     email: zzeng at neiu dot edu
Office hours:   Monday & Wednesday,         8:00-9:00am,  2:00-3:30  pm  (walk-in, no need to make an appointment)
                         

Fall 2014 course links:   
[Math 253][Math 304][Math 340]

NewNAClab 3.0:  Numerical Algebraic Computing Toolbox for Matlab 
                                    (updated on June 26, 2013)

Research projects:
supported in part by National Science Foundation under Grant DMS-0715127 
(Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s)
and do not necessarily reflect the views of the National Science Foundation
)

Software release  ApaTools a software toolbox for approximate polynomial algebra in Maple 

Selected publications:

Computing multiple roots of inexact polynomials,  Mathematics of Computation, 74(2005),  pp 869 - 903
                This work won the Distinguished Paper Award
at ACM ISSAC '03 Conference

                  
          The citation:
               
             citation                 award       

Algorithm 835: MultRoot -- A Matlab package for computing polynomial roots and multiplicities, 
ACM Transaction on Mathematical Software, 30, pp 218-315, 2004    [Software Package]

Multiple zeros of nonlinear systems   Mathematics of Computation,  

The numerical factorization of polynomials   Preprint,  

Regularization and matrix computation in numerical polynomial algebra  

A rank-revealing method with updating, downdating and applicationsPart I  &  Part II
SIAM Journal on Matrix Analysis and Applications

The approximate GCD of inexact polynomials   Part I  Part II 

A numerical elimination method for polynomial computations  Theoretical Computer Science

The closedness subspace method for computing the multiplicity structure of a polynomial system

 

Other publications

Presentations (click the image to open the file, then keep clicking to see the animation)

       The Tale of Polynomials     Removing Ill-posedness    Approximate GCD
 

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