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</html><description>Javier Cilleruelo, Carlos Vinuesa e Imre Ruzsa ha resuelto un importante problema en Teor&#xED;a Combinatoria de N&#xFA;meros, denominado el problema de Sidon. Los conjuntos de Sidon son conjuntos de enteros positivos con la propiedad de que todas las sumas de dos elementos del conjunto son distintas. Por ejemplo, {1, 2, 5, 10, 16, 23, 33, 35} es un conjunto de Sidon mientras que&#xA0; {1, 3, 7, 10, 17, 23, 28, 35} no lo es porque aparecen sumas repetidas: 1+23=7+17. &#xBF;Cu&#xE1;l es el mayor tama&#xF1;o que puede tener un conjunto de Sidon en {1, . . , n}? &#xBF;Y si permitimos&#x2026;</description><thumbnail_url>http://www.madrimasd.org/blogs/matematicas/files/2010/11/cille1-233x300.jpg</thumbnail_url></oembed>
