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Facetas del politopo de recubrimiento con coeficientes en {0, 1, 2, 3}.

Miguel Sánchez García, M.ª Inés Sobrón Fernández, M.ª Candelaria Espinel Febles (1992)

Trabajos de Investigación Operativa

En dos artículos, publicados en 1989, Balas y Ng dan una metodología para construir facetas del politopo de recubrimiento con coeficientes en {0, 1, 2}. Siguiendo esta metodología, en el presente artículo decimos cómo se contruyen facetas de dicho politopo con coeficientes en {0, 1, 2, 3}.

Factoring an odd abelian group by lacunary cyclic subsets

Sándor Szabó (2010)

Discussiones Mathematicae - General Algebra and Applications

It is a known result that if a finite abelian group of odd order is a direct product of lacunary cyclic subsets, then at least one of the factors must be a subgroup. The paper gives an elementary proof that does not rely on characters.

Fiber orders and compact spaces of uncountable weight

Antonio Avilés, Ondřej F. K. Kalenda (2009)

Fundamenta Mathematicae

We study an order relation on the fibers of a continuous map and its application to the study of the structure of compact spaces of uncountable weight.

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