Riku Klén
Riku Klén
Turku PET Centre, University of Turku, Finland
Verified email at - Homepage
Cited by
Cited by
Generalized Orlicz spaces and related PDE
P Harjulehto, P Hästö, R Klén
Nonlinear Analysis: Theory, Methods & Applications 143, 155-173, 2016
On Jordan type inequalities for hyperbolic functions
R Klén, M Visuri, M Vuorinen
Journal of Inequalities and Applications, 2010
Inequalities for the generalized trigonometric and hyperbolic functions
R Klén, M Vuorinen, X Zhang
Journal of Mathematical Analysis and Applications 409 (1), 521-529, 2014
Conformally invariant metrics and quasiconformal mappings
P Hariri, R Klén, M Vuorinen
Springer, 2020
On hyperbolic type metrics
R Klén
Annales Academić Scientiarum Fennicć Mathematica Dissertationes 152, 2009
Local convexity properties of quasihyperbolic balls in punctured space
R Klén
arXiv preprint arXiv:0710.2973, 2007
Lipschitz conditions, triangular ratio metric, and quasiconformal maps
J Chen, P Hariri, R Klén, M Vuorinen
arXiv preprint arXiv:1403.6582, 2014
Dual gated PET/CT imaging of small targets of the heart: Method description and testing with a dynamic heart phantom
T Kokki, HT Sipilä, M Teräs, T Noponen, N Durand-Schaefer, R Klén, ...
Journal of nuclear cardiology 17, 71-84, 2010
Convexity properties of generalized trigonometric and hyperbolic functions
Á Baricz, BA Bhayo, R Klén
Aequationes mathematicae 89, 473-484, 2015
Secretin activates brown fat and induces satiation
S Laurila, L Sun, M Lahesmaa, K Schnabl, K Laitinen, R Klén, Y Li, ...
Nature metabolism 3 (6), 798-809, 2021
Magnetic resonance-based attenuation correction and scatter correction in neurological positron emission tomography/magnetic resonance imaging—current status with emerging …
J Teuho, A Torrado-Carvajal, H Herzog, U Anazodo, R Klén, H Iida, ...
Frontiers in physics, 243, 2020
Crowdsourcing digital health measures to predict Parkinson’s disease severity: the Parkinson’s Disease Digital Biomarker DREAM Challenge
SK Sieberts, J Schaff, M Duda, BÁ Pataki, M Sun, P Snyder, JF Daneault, ...
NPJ digital medicine 4 (1), 53, 2021
The visual angle metric and Möbius transformations
R Klén, H Lindén, M Vuorinen, G Wang
Computational Methods and Function Theory 14, 577-608, 2014
Local convexity properties of j-metric balls
R Klén
arXiv preprint arXiv:0710.2386, 2007
New trigonometric and hyperbolic inequalities
BA Bhayo, R Klén, J Sándor
arXiv preprint arXiv:1501.05070, 2015
Quasihyperbolic metric and Möbius transformations
R Klén, M Vuorinen, X Zhang
Proceedings of the American Mathematical Society 142 (1), 311-322, 2014
Bernoulli inequality and hypergeometric functions
R Klén, V Manojlović, S Simić, M Vuorinen
Proceedings of the American Mathematical Society 142 (2), 559-573, 2014
Some remarks on the Cassinian metric
P Hariri, R Klen, M Vuorinen, X Zhang
arXiv preprint arXiv:1504.01923, 2015
On the stability of -uniform domains
R Klén, Y Li, SK Sahoo, M Vuorinen
Monatshefte für Mathematik 174 (2), 231-258, 2014
Quasihyperbolic geometry in euclidean and Banach spaces
R Klén, A Rasila, J Talponen
arXiv preprint arXiv:1104.3745, 2011
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