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• Gromov hyperbolicity and quasihyperbolic geodesics 

  Koskela, Pekka; Lammi, Päivi; Manojlovic, Vesna (Societe Mathematique de France; École normale supérieure, 2014)

  We characterize Gromov hyperbolicity of the quasihyperbolic metric space (\Omega,k) by geometric properties of the Ahlfors regular length metric measure space (\Omega,d,\mu). The characterizing properties are called the ...

• Quasihyperbolic boundary condition: Compactness of the inner boundary 

  Lammi, Päivi (University of Illinois, 2011)

  We prove that if a metric space satisfies a suitable growth condition in the quasihyperbolic metric and the Gehring–Hayman theorem in the original metric, then the inner boundary of the space is homeomorphic to the Gromov ...

• p-harmonic coordinates for Hölder metrics and applications 

  Julin, Vesa; Liimatainen, Tony; Salo, Mikko (International Press, 2017)

  We show that on any Riemannian manifold with H¨older continuous metric tensor, there exists a p-harmonic coordinate system near any point. When p = n this leads to a useful gauge condition for regularity results in ...

• Muckenhoupt Ap-properties of Distance Functions and Applications to Hardy-Sobolev -type Inequalities 

  Dyda, Bartłomiej; Ihnatsyeva, Lizaveta; Lehrbäck, Juha; Tuominen, Heli; Vähäkangas, Antti (Springer, 2019)

• Quality evaluation of software architecture with application to OpenH.323 protocol 

  Hoffmann, Martin (University of Jyväskylä, Department of Mathematical Information Technology, 2006)

  The requirements towards software systems usually go beyond the correct functionality, the presence of certain quality demands are also very essential for the systems' acceptance by the stakeholders. So quality control ...