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Klén, Riku

Co-Author Distance
Author ID: klen.riku Recent zbMATH articles by "Klén, Riku"
Published as: Klén, Riku; Klén, R.
Homepage: http://users.utu.fi/ripekl
External Links: MGP · ORCID · Google Scholar
Documents Indexed: 39 Publications since 2008, including 2 Books and 1 Additional arXiv Preprint
Reviewing Activity: 1 Review
Co-Authors: 26 Co-Authors with 32 Joint Publications
460 Co-Co-Authors
all top 5

Co-Authors

7 single-authored
21 Vuorinen, Matti Keijo Kustaa
5 Zhang, Xiaohui
4 Li, Yaxiang
4 Sahoo, Swadesh Kumar
3 Hariri, Parisa
3 Hästö, Peter A.
2 Bhayo, Barkat Ali
2 Harjulehto, Petteri
2 Todorčević, Vesna
2 Rasila, Antti
2 Suomala, Ville
2 Talponen, Jarno
1 Baricz, Árpád
1 Chen, Jiaolong
1 Hariri, Parosa
1 Harmaala, Eero
1 Hokuni, S.
1 Lindén, Henri
1 Martin, Gaven J.
1 Mohapatra, Manas Ranjan
1 Nasser, Mohamed M. S.
1 Rainio, Oona
1 Sándor, József
1 Simić, Slavko
1 Visuri, M.
1 Wang, Gendi
all top 5

Serials

4 Publicationes Mathematicae Debrecen
4 Annales Academiae Scientiarum Fennicae. Mathematica
3 Journal of Mathematical Analysis and Applications
3 The Journal of Analysis
2 Monatshefte für Mathematik
2 Proceedings of the American Mathematical Society
2 Computational Methods and Function Theory
1 Journal d’Analyse Mathématique
1 Mathematische Nachrichten
1 Mathematica Scandinavica
1 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods
1 Results in Mathematics
1 The Journal of Geometric Analysis
1 Aequationes Mathematicae
1 Computational and Applied Mathematics
1 Sbornik: Mathematics
1 Conformal Geometry and Dynamics
1 Journal of Inequalities and Applications
1 Miskolc Mathematical Notes
1 The Australian Journal of Mathematical Analysis and Applications
1 Annales Academiæ Scientiarum Fennicæ. Mathematica. Dissertationes
1 Annales Mathematicae et Informaticae
1 Zbirnyk Prats’ Instytutu Matematyky NAN Ukraïny
1 Springer Monographs in Mathematics
all top 5

Fields

29 Functions of a complex variable (30-XX)
16 Geometry (51-XX)
4 Real functions (26-XX)
4 Special functions (33-XX)
3 Measure and integration (28-XX)
3 Functional analysis (46-XX)
2 Convex and discrete geometry (52-XX)
1 Partial differential equations (35-XX)
1 Harmonic analysis on Euclidean spaces (42-XX)
1 Calculus of variations and optimal control; optimization (49-XX)
1 Differential geometry (53-XX)
1 Global analysis, analysis on manifolds (58-XX)
1 Computer science (68-XX)

Publications by Year

all cited Publications top 5 cited Publications

Citations contained in zbMATH Open

31 Publications have been cited 370 times in 248 Documents Cited by ▼ Year ▼
Generalized Orlicz spaces and related PDE. Zbl 1360.46029
Harjulehto, Petteri; Hästö, Peter; Klén, Riku
70
2016
Conformally invariant metrics and quasiconformal mappings. Zbl 1450.30003
Hariri, Parisa; Klén, Riku; Vuorinen, Matti
48
2020
On Jordan type inequalities for hyperbolic functions. Zbl 1211.26015
Klén, R.; Visuri, M.; Vuorinen, M.
32
2010
Inequalities for the generalized trigonometric and hyperbolic functions. Zbl 1306.33013
Klén, Riku; Vuorinen, Matti; Zhang, Xiaohui
28
2014
Lipschitz conditions, triangular ratio metric, and quasiconformal maps. Zbl 1374.30069
Chen, Jiaolong; Hariri, Parisa; Klén, Riku; Vuorinen, Matti
23
2015
New trigonometric and hyperbolic inequalities. Zbl 1399.26031
Bhayo, Barkat Ali; Klén, Riku; Sándor, József
17
2017
The visual angle metric and Möbius transformations. Zbl 1307.30082
Klén, Riku; Lindén, Henri; Vuorinen, Matti; Wang, Gendi
14
2014
Convexity properties of generalized trigonometric and hyperbolic functions. Zbl 1394.33006
Baricz, Árpád; Bhayo, Barkat Ali; Klén, Riku
13
2015
Local convexity properties of quasihyperbolic balls in punctured space. Zbl 1166.30023
Klén, Riku
12
2008
Some remarks on the Cassinian metric. Zbl 1399.51009
Hariri, Parosa; Klén, Riku; Vourinen, Matti; Zhang, Xiaohui
12
2017
On hyperbolic type metrics. Zbl 1161.53001
Klén, Riku
11
2009
Bernoulli inequality and hypergeometric functions. Zbl 1288.26011
Klén, Riku; Manojlović, Vesna; Simić, Slavko; Vuorinen, Matti
11
2014
Quasihyperbolic metric and Möbius transformations. Zbl 1408.30027
Klén, Riku; Vuorinen, Matti; Zhang, Xiaohui
8
2014
Balls in the triangular ratio metric. Zbl 1362.30031
Hokuni, S.; Klén, R.; Li, Y.; Vuorinen, M.
7
2016
Quasihyperbolic geometry in Euclidean and Banach spaces. Zbl 1237.30008
Klén, Riku; Rasila, Antti; Talponen, Jarno
7
2010
Geometric properties of \(\varphi \)-uniform domains. Zbl 1366.30019
Hästö, Peter; Klén, Riku; Sahoo, Swadesh Kumar; Vuorinen, Matti
7
2016
On the stability of \(\varphi\)-uniform domains. Zbl 1297.30069
Klén, R.; Li, Y.; Sahoo, S. K.; Vuorinen, M.
7
2014
Geometric properties of the Cassinian metric. Zbl 1392.30005
Klén, Riku; Mohapatra, Manas Ranjan; Sahoo, Swadesh Kumar
7
2017
Local convexity properties of \(j\)-metric balls. Zbl 1149.30035
Klén, Riku
5
2008
Local convexity properties of balls in Apollonian and Seittenranta’s metrics. Zbl 1317.30028
Klén, Riku
5
2013
Inclusion relations of hyperbolic type metric balls. II. Zbl 1289.30221
Klén, Riku; Vuorinen, Matti
5
2013
Close-to-convexity of quasihyperbolic and \(j\)-metric balls. Zbl 1213.30079
Klén, Riku
5
2010
On the smoothness of quasihyperbolic balls. Zbl 1361.30039
Klén, Riku; Rasila, Antti; Talponen, Jarno
3
2017
Inclusion relations of hyperbolic type metric balls. Zbl 1299.30118
Klén, Riku; Vuorinen, Matti
3
2012
Local convexity of metric balls. Zbl 1395.51019
Hariri, Parisa; Klén, Riku; Vuorinen, Matti
3
2018
On isometries of conformally invariant metrics. Zbl 1345.30025
Klén, Riku; Vuorinen, Matti; Zhang, Xiaohui
2
2016
Apollonian circles and hyperbolic geometry. Zbl 1285.51017
Klén, Riku; Vuorinen, Matti
1
2011
Volume growth of quasihyperbolic balls. Zbl 1385.51014
Zhang, Xiaohui; Klén, Riku; Suomala, Ville; Vuorinen, Matti
1
2017
Teichmüller’s problem in space. Zbl 1397.30023
Klén, R.; Todorčević, V.; Vuorinen, M.
1
2017
Hyperbolic type distances in starlike domains. Zbl 1376.30031
Klén, Riku
1
2017
Subdomain geometry of hyperbolic type metrics. Zbl 1289.30220
Klén, R.; Li, Y.; Vuorinen, M.
1
2013
Conformally invariant metrics and quasiconformal mappings. Zbl 1450.30003
Hariri, Parisa; Klén, Riku; Vuorinen, Matti
48
2020
Local convexity of metric balls. Zbl 1395.51019
Hariri, Parisa; Klén, Riku; Vuorinen, Matti
3
2018
New trigonometric and hyperbolic inequalities. Zbl 1399.26031
Bhayo, Barkat Ali; Klén, Riku; Sándor, József
17
2017
Some remarks on the Cassinian metric. Zbl 1399.51009
Hariri, Parosa; Klén, Riku; Vourinen, Matti; Zhang, Xiaohui
12
2017
Geometric properties of the Cassinian metric. Zbl 1392.30005
Klén, Riku; Mohapatra, Manas Ranjan; Sahoo, Swadesh Kumar
7
2017
On the smoothness of quasihyperbolic balls. Zbl 1361.30039
Klén, Riku; Rasila, Antti; Talponen, Jarno
3
2017
Volume growth of quasihyperbolic balls. Zbl 1385.51014
Zhang, Xiaohui; Klén, Riku; Suomala, Ville; Vuorinen, Matti
1
2017
Teichmüller’s problem in space. Zbl 1397.30023
Klén, R.; Todorčević, V.; Vuorinen, M.
1
2017
Hyperbolic type distances in starlike domains. Zbl 1376.30031
Klén, Riku
1
2017
Generalized Orlicz spaces and related PDE. Zbl 1360.46029
Harjulehto, Petteri; Hästö, Peter; Klén, Riku
70
2016
Balls in the triangular ratio metric. Zbl 1362.30031
Hokuni, S.; Klén, R.; Li, Y.; Vuorinen, M.
7
2016
Geometric properties of \(\varphi \)-uniform domains. Zbl 1366.30019
Hästö, Peter; Klén, Riku; Sahoo, Swadesh Kumar; Vuorinen, Matti
7
2016
On isometries of conformally invariant metrics. Zbl 1345.30025
Klén, Riku; Vuorinen, Matti; Zhang, Xiaohui
2
2016
Lipschitz conditions, triangular ratio metric, and quasiconformal maps. Zbl 1374.30069
Chen, Jiaolong; Hariri, Parisa; Klén, Riku; Vuorinen, Matti
23
2015
Convexity properties of generalized trigonometric and hyperbolic functions. Zbl 1394.33006
Baricz, Árpád; Bhayo, Barkat Ali; Klén, Riku
13
2015
Inequalities for the generalized trigonometric and hyperbolic functions. Zbl 1306.33013
Klén, Riku; Vuorinen, Matti; Zhang, Xiaohui
28
2014
The visual angle metric and Möbius transformations. Zbl 1307.30082
Klén, Riku; Lindén, Henri; Vuorinen, Matti; Wang, Gendi
14
2014
Bernoulli inequality and hypergeometric functions. Zbl 1288.26011
Klén, Riku; Manojlović, Vesna; Simić, Slavko; Vuorinen, Matti
11
2014
Quasihyperbolic metric and Möbius transformations. Zbl 1408.30027
Klén, Riku; Vuorinen, Matti; Zhang, Xiaohui
8
2014
On the stability of \(\varphi\)-uniform domains. Zbl 1297.30069
Klén, R.; Li, Y.; Sahoo, S. K.; Vuorinen, M.
7
2014
Local convexity properties of balls in Apollonian and Seittenranta’s metrics. Zbl 1317.30028
Klén, Riku
5
2013
Inclusion relations of hyperbolic type metric balls. II. Zbl 1289.30221
Klén, Riku; Vuorinen, Matti
5
2013
Subdomain geometry of hyperbolic type metrics. Zbl 1289.30220
Klén, R.; Li, Y.; Vuorinen, M.
1
2013
Inclusion relations of hyperbolic type metric balls. Zbl 1299.30118
Klén, Riku; Vuorinen, Matti
3
2012
Apollonian circles and hyperbolic geometry. Zbl 1285.51017
Klén, Riku; Vuorinen, Matti
1
2011
On Jordan type inequalities for hyperbolic functions. Zbl 1211.26015
Klén, R.; Visuri, M.; Vuorinen, M.
32
2010
Quasihyperbolic geometry in Euclidean and Banach spaces. Zbl 1237.30008
Klén, Riku; Rasila, Antti; Talponen, Jarno
7
2010
Close-to-convexity of quasihyperbolic and \(j\)-metric balls. Zbl 1213.30079
Klén, Riku
5
2010
On hyperbolic type metrics. Zbl 1161.53001
Klén, Riku
11
2009
Local convexity properties of quasihyperbolic balls in punctured space. Zbl 1166.30023
Klén, Riku
12
2008
Local convexity properties of \(j\)-metric balls. Zbl 1149.30035
Klén, Riku
5
2008
all cited Publications top 5 cited Publications
all top 5

Cited by 257 Authors

44 Vuorinen, Matti Keijo Kustaa
16 Rainio, Oona
14 Hästö, Peter A.
13 Zhou, Qingshan
12 Bagul, Yogesh Jibhau
12 Klén, Riku
11 Rasila, Antti
11 Wang, Gendi
11 Zhang, Xiaohui
9 Bhayo, Barkat Ali
9 Nasser, Mohamed M. S.
8 Chesneau, Christophe
8 Chlebicka, Iwona
8 Chu, Yuming
8 Harjulehto, Petteri
8 Huang, Manzi
8 Li, Yaxiang
8 Neuman, Edward
8 Ok, Jihoon
8 Wang, Xiantao
8 Yin, Li
7 Byun, Sun-Sig
7 Ponnusamy, Saminathan
6 Gwiazda, Piotr
6 Sahoo, Swadesh Kumar
5 Baasandorj, Sumiya
5 Chen, Xiaodiao
5 Guan, Tiantian
5 Karppinen, Arttu
5 Lin, Xiuli
5 Malešević, Branko J.
5 Nasyrov, Semen R.
5 Yang, Zhenhang
4 Benyaiche, Allami
4 Dhaigude, Ramkrishna M.
4 Fujimura, Masayo
4 Hariri, Parisa
4 He, Yuehui
4 Huang, Liguo
4 Khlifi, Ismail
4 Mocanu, Marcelina
4 Mohapatra, Manas Ranjan
4 Sugawa, Toshiyuki
4 Yang, Dachun
4 Zatorska-Goldstein, Anna
3 Fletcher, Alastair N.
3 Ge, Bin
3 Hakula, Harri
3 Ibragimov, Zair
3 Luo, QiangHua
3 Oh, Jehan
3 Sándor, József
3 Wang, Miaokun
3 Wang, Songbai
2 Ahmida, Youssef
2 Avci, Mustafa
2 Baricz, Árpád
2 Betsakos, Dimitrios
2 Dautova, Dina
2 Hong, Miao-Ying
2 Jia, Gaili
2 Jiao, Bo
2 Kamińska, Anna
2 Kargar, Rahim
2 Kostić, Marko
2 Lutovac, Tatjana
2 Miyakawa, Hiroki
2 Qian, Cheng
2 Ragusa, Maria Alessandra
2 Raut, Vinay M.
2 Song, Yingqing
2 Takeuchi, Shingo
2 Thool, Sumedh B.
2 Tianchai, Pattanapong
2 Wang, Yongli
2 Xiao, Yingqing
2 Xie, Guangheng
2 Xu, Xiaoxue
2 Yang, Sibei
2 Yang, Zhiqiang
2 Youssfi, Ahmed
2 Yuan, Wenshuo
2 Zhu, Ling
2 Zhu, Ping
2 Żyluk, Mariusz
1 Allu, Vasudevarao
1 Anderson, Glen Douglas
1 Ardjouni, Abdelouaheb
1 Baruah, Debangana
1 Bercu, Gabriel
1 Bessioud, Karima
1 Boujemaa, Hamza
1 Bulíček, Miroslav
1 Cabada, Alberto
1 Cao, Jiejun
1 Cao, Qinghai
1 Capolli, Marco
1 Chacón, Gerardo A.
1 Chacón, Gerardo R.
1 Chaĭchenko, Stanislav Olegovich
...and 157 more Authors
all top 5

Cited in 107 Serials

22 Journal of Mathematical Analysis and Applications
10 Bulletin of the Malaysian Mathematical Sciences Society. Second Series
10 Computational Methods and Function Theory
10 Journal of Mathematical Inequalities
9 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM
6 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods
6 Proceedings of the American Mathematical Society
6 Calculus of Variations and Partial Differential Equations
6 Journal of Inequalities and Applications
5 Journal of Differential Equations
5 Monatshefte für Mathematik
5 Results in Mathematics
5 Complex Variables and Elliptic Equations
4 Applied Mathematics and Computation
4 The Journal of Analysis
4 Abstract and Applied Analysis
4 Journal of Function Spaces
3 Israel Journal of Mathematics
3 Czechoslovak Mathematical Journal
3 Journal of Functional Analysis
3 Mathematische Nachrichten
3 The Journal of Geometric Analysis
3 Integral Transforms and Special Functions
3 Tbilisi Mathematical Journal
3 Problemy Analiza. Issues of Analysis
3 Complex Analysis and its Synergies
3 Journal of Elliptic and Parabolic Equations
2 International Journal of Mathematics and Mathematical Sciences
2 Transactions of the American Mathematical Society
2 Chinese Annals of Mathematics. Series B
2 Forum Mathematicum
2 Topological Methods in Nonlinear Analysis
2 ETNA. Electronic Transactions on Numerical Analysis
2 Bulletin des Sciences Mathématiques
2 Advances in Computational Mathematics
2 Conformal Geometry and Dynamics
2 Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie V
2 Mediterranean Journal of Mathematics
2 Complex Analysis and Operator Theory
2 Open Mathematics
2 Moroccan Journal of Pure and Applied Analysis
2 AIMS Mathematics
2 Fixed Point Theory and Algorithms for Sciences and Engineering
1 Analysis Mathematica
1 Bulletin of the Australian Mathematical Society
1 Computers & Mathematics with Applications
1 Journal d’Analyse Mathématique
1 Journal of Mathematical Physics
1 Lithuanian Mathematical Journal
1 Mathematical Proceedings of the Cambridge Philosophical Society
1 Nonlinearity
1 Annali di Matematica Pura ed Applicata. Serie Quarta
1 Archiv der Mathematik
1 Collectanea Mathematica
1 Journal of Computational and Applied Mathematics
1 Journal of Geometry
1 The Journal of the Indian Mathematical Society. New Series
1 Manuscripta Mathematica
1 Mathematische Zeitschrift
1 Proceedings of the Edinburgh Mathematical Society. Series II
1 Rendiconti del Circolo Matemàtico di Palermo. Serie II
1 Siberian Mathematical Journal
1 Zeitschrift für Analysis und ihre Anwendungen
1 Bulletin of the Iranian Mathematical Society
1 Annales de l’Institut Henri Poincaré. Analyse Non Linéaire
1 Applied Mathematics Letters
1 Journal of the Ramanujan Mathematical Society
1 Aequationes Mathematicae
1 SIAM Journal on Mathematical Analysis
1 Applied Mathematics. Series B (English Edition)
1 Journal of Mathematical Sciences (New York)
1 Electronic Journal of Differential Equations (EJDE)
1 NoDEA. Nonlinear Differential Equations and Applications
1 Sbornik: Mathematics
1 Journal of Applied Analysis
1 Positivity
1 Novi Sad Journal of Mathematics
1 Journal of the European Mathematical Society (JEMS)
1 Acta Mathematica Sinica. English Series
1 Communications in Contemporary Mathematics
1 Annales Mathematicae Silesianae
1 Nonlinear Analysis. Modelling and Control
1 Journal of the Australian Mathematical Society
1 Kragujevac Journal of Mathematics
1 Applied Mathematics E-Notes
1 Acta Mathematica Scientia. Series B. (English Edition)
1 Bulletin of the Brazilian Mathematical Society. New Series
1 Thai Journal of Mathematics
1 Cubo
1 Boundary Value Problems
1 Frontiers of Mathematics in China
1 Applicable Analysis and Discrete Mathematics
1 Banach Journal of Mathematical Analysis
1 Analysis & PDE
1 Asian-European Journal of Mathematics
1 Acta Universitatis Sapientiae. Mathematica
1 Advances in Mathematical Physics
1 Science China. Mathematics
1 Analysis and Mathematical Physics
1 Afrika Matematika
...and 7 more Serials
all top 5

Cited in 27 Fields

91 Functions of a complex variable (30-XX)
70 Real functions (26-XX)
56 Special functions (33-XX)
49 Partial differential equations (35-XX)
39 Geometry (51-XX)
34 Functional analysis (46-XX)
14 Harmonic analysis on Euclidean spaces (42-XX)
11 Potential theory (31-XX)
11 Calculus of variations and optimal control; optimization (49-XX)
7 Operator theory (47-XX)
6 Ordinary differential equations (34-XX)
6 Approximations and expansions (41-XX)
6 Numerical analysis (65-XX)
4 General topology (54-XX)
3 Global analysis, analysis on manifolds (58-XX)
3 Probability theory and stochastic processes (60-XX)
2 Measure and integration (28-XX)
2 Dynamical systems and ergodic theory (37-XX)
2 Convex and discrete geometry (52-XX)
2 Differential geometry (53-XX)
1 Field theory and polynomials (12-XX)
1 Several complex variables and analytic spaces (32-XX)
1 Difference and functional equations (39-XX)
1 Integral transforms, operational calculus (44-XX)
1 Integral equations (45-XX)
1 Manifolds and cell complexes (57-XX)
1 Mechanics of deformable solids (74-XX)

Citations by Year