most recent 30 from http://mathoverflow.net 2013-06-19T07:24:18Z http://mathoverflow.net/feeds/question/106226 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/106226/determine-if-a-matrix-is-unimodular qwerty1793 2012-09-03T08:44:36Z 2012-09-03T09:22:58Z

<p>Is deciding if an integer square matrix has determinant $\pm 1$ faster that calculating the determinant of the matrix?</p>