It has been conjectured that when Gaussian elimination with complete pivoting is applied to a real n-by-n matrix, the maximum possible growth is n. In this note, a 13-by-13 matrix is given, for which the growth is 13.0205. The matrix was constructed by solving a large nonlinear programming problem. Growth larger than n has also been observed for matrices of orders 14, 15, and 16.
机构:
CUNY, Lehman Coll, Dept Math & Comp Sci, Bronx, NY 10468 USA
CUNY, Grad Ctr, PhD Program Math, New York, NY 10036 USA
CUNY, Grad Ctr, PhD Program Comp Sci, New York, NY 10036 USACUNY, Lehman Coll, Dept Math & Comp Sci, Bronx, NY 10468 USA
Pan, Victor Y.
Zhao, Liang
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机构:
CUNY, Grad Ctr, PhD Program Math, New York, NY 10036 USA
CUNY, Grad Ctr, PhD Program Comp Sci, New York, NY 10036 USACUNY, Lehman Coll, Dept Math & Comp Sci, Bronx, NY 10468 USA