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math.PR2013★ 1 cited
Further results on consensus formation in the Deffuant model
Olle Häggström, Timo Hirscher
The so-called Deffuant model describes a pattern for social interaction, in which two neighboring individuals randomly meet and share their opinions on a certain topic, if their di…
math.OC2013
Integer matrices that are not copositive have certificates of less than quadratic complexity
Timo Hirscher
A real symmetric n times n matrix is called copositive if the corresponding quadratic form is non-negative on the closed first orthant. If the matrix fails to be copositive there e…