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  • 1 Université Denis-Diderot, Paris 7 Equipe de Logique Mathématique, UFR de Mathématiques (case 7012) 2 place Jussieu 75251 Paris Cedex 05 France
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Abstract  

We prove that the cardinal estimates given by Shelah’s bound on the Galvin-Hajnal norm can be obtained via PCF topology alone.