Articles

• The wave equation for stiff strings and piano tuning

  Xavier Gràcia, Tomás Sanz-Perela

  1-16

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• Explicit bounds for growth of sets in non-abelian groups

  Alberto Espuny Díaz

  17-26

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• Compactification of a diagonal action on the product of CAT(-1) spaces

  Teresa García

  27-38

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