Complexity of the Havas, Majewski, Matthews LLL Hermite Normal Form algorithm
Wilberd van der Kallen
Abstract
We show that the integers in the HMM LLL HNF algorithm have bit length O(m.log(m.B)), where m is the number of rows and B is the maximum square length of a row of the input matrix. This is only a little worse than the estimate O(m.log(B)) in the LLL algorithm.
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