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Hace 7 horas · La policía del campus de la Universidad de Michigan bloquea un área el martes 21 de mayo de 2024 en Ann Arbor, Michigan. ANN ARBOR, Michigan La policía desmanteló el martes un campamento ...
Hace 7 horas · University of Michigan, Ann Arbor, USA. Yushan Qu & Jon Lee. ... Universidad de La Laguna, Tenerife, Spain. Juan José Salazar González . Ethics declarations. Disclosure of Interests. The authors have no competing interests to declare that are relevant to the content of this article.
Hace 7 horas · There is a big theory on when set covering LPs have integer optima (for all objectives). It is the theory of ideal matrices; see [].A 0/1 matrix is balanced if it does not contain a square submatrix of odd order with two ones per row and per column. In fact, the 0/1 TU (totally unimodular; see [], for example) matrices are a proper subclass of the balanced matrices.
