Overview
The aim of complexity theory is to evaluate the minimal number of operations required to compute a solution of a given problem (and to determine the corresponding algorithm). This theory is far from being closed, since the answer is not known even for solving a linear system Ax = b, with A a matrix n × n invertible: classical factorization methods have an O(n 3) complexity but certain fast algorithms have an O(n α) complexity, with α < 2.5; the minimal value of α (proved to be larger than 2) is still unknown (see Coppersmith and Winograd [82]).
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© 2003 Springer-Verlag Berlin Heidelberg
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Bonnans, J.F., Gilbert, J.C., Lemaréchal, C., Sagastizábal, C.A. (2003). Complexity of Linear Optimization Problems with Integer Data. In: Numerical Optimization. Universitext. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-05078-1_23
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DOI: https://doi.org/10.1007/978-3-662-05078-1_23
Publisher Name: Springer, Berlin, Heidelberg
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