Valentin Keyantuo

879 total citations
42 papers, 599 citations indexed

About

Valentin Keyantuo is a scholar working on Applied Mathematics, Mathematical Physics and Computational Theory and Mathematics. According to data from OpenAlex, Valentin Keyantuo has authored 42 papers receiving a total of 599 indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Applied Mathematics, 20 papers in Mathematical Physics and 14 papers in Computational Theory and Mathematics. Recurrent topics in Valentin Keyantuo's work include Nonlinear Differential Equations Analysis (17 papers), Advanced Mathematical Modeling in Engineering (14 papers) and Stability and Controllability of Differential Equations (11 papers). Valentin Keyantuo is often cited by papers focused on Nonlinear Differential Equations Analysis (17 papers), Advanced Mathematical Modeling in Engineering (14 papers) and Stability and Controllability of Differential Equations (11 papers). Valentin Keyantuo collaborates with scholars based in Puerto Rico, Chile and Germany. Valentin Keyantuo's co-authors include Carlos Lizama, Mahamadi Warma, Wolfgang Arendt, Ioana Ciorănescu, Edgardo Alvarez, Ciprian G. Gal, Claus Müller, Louis Tebou and Pedro J. Miana and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Mathematical Analysis and Applications and Journal of Differential Equations.

In The Last Decade

Valentin Keyantuo

39 papers receiving 538 citations

Peers

Valentin Keyantuo

CTM

CSE

Andrea Scapellato Italy

Joaquim Serra Spain

Kazuaki Taira Japan

Moritz Kaßmann Germany

Shangquan Bu China

Xuping Zhang China

Ralph deLaubenfels United States

Yuhua Li China

Vasile Staicu Portugal

Kaimin Teng China

Andrea Scapellato Italy

Valentin Keyantuo

453 ×0.9

169 ×0.7

149 ×0.7

CTM

72 ×0.4

59 ×0.4

CSE

Citations per year, relative to Valentin Keyantuo Valentin Keyantuo (= 1×) peers Andrea Scapellato

Countries citing papers authored by Valentin Keyantuo

Since Specialization

Citations

This map shows the geographic impact of Valentin Keyantuo's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Valentin Keyantuo with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Valentin Keyantuo more than expected).

Fields of papers citing papers by Valentin Keyantuo

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Valentin Keyantuo. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Valentin Keyantuo. The network helps show where Valentin Keyantuo may publish in the future.

Co-authorship network of co-authors of Valentin Keyantuo

This figure shows the co-authorship network connecting the top 25 collaborators of Valentin Keyantuo. A scholar is included among the top collaborators of Valentin Keyantuo based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Valentin Keyantuo. Valentin Keyantuo is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Keyantuo, Valentin, et al.. (2023). Fractional integration of imaginary order in vector-valued Hölder spaces. Archiv der Mathematik. 120(5). 493–506.

Keyantuo, Valentin, et al.. (2023). Cyclic sequences of periodic sums in βN. Topology and its Applications. 341. 108731–108731.

Keyantuo, Valentin, et al.. (2023). Memory approximate controllability properties for higher order Hilfer time-fractional evolution equations. Evolution equations and control theory. 13(2). 616–643. 1 indexed citations

Keyantuo, Valentin, et al.. (2020). Besov maximal regularity for a class of degenerate integro‐differential equations with infinite delay in Banach spaces. Mathematical Methods in the Applied Sciences. 43(12). 7239–7268. 1 indexed citations

Keyantuo, Valentin, Carlos Lizama, & Mahamadi Warma. (2019). Lattice Dynamical Systems Associated with a Fractional Laplacian. Numerical Functional Analysis and Optimization. 40(11). 1315–1343. 7 indexed citations

Keyantuo, Valentin, et al.. (2019). Fundamental Solutions for Discrete Dynamical Systems Involving the Fractional Laplacian. 6(4). 1 indexed citations

Keyantuo, Valentin, et al.. (2019). Asymptotic behavior of mild solutions for a class of abstract nonlinear difference equations of convolution type. Advances in Difference Equations. 2019(1). 8 indexed citations

Keyantuo, Valentin, et al.. (2019). Semigroup completions of locally compact Abelian groups. Topology and its Applications. 263. 199–208. 3 indexed citations

Keyantuo, Valentin, et al.. (2018). Well-posedness of degenerate integro-differential equations in function spaces. SHILAP Revista de lepidopterología. 1 indexed citations

10.

Keyantuo, Valentin, Carlos Lizama, & Mahamadi Warma. (2017). Existence, regularity and representation of solutions of time fractional wave equations. SHILAP Revista de lepidopterología. 9 indexed citations

11.

Keyantuo, Valentin, Carlos Lizama, & Mahamadi Warma. (2013). Spectral Criteria for Solvability of Boundary Value Problems and Positivity of Solutions of Time-Fractional Differential Equations. Abstract and Applied Analysis. 2013. 1–11. 20 indexed citations

12.

Keyantuo, Valentin, et al.. (2008). Periodic solutions of integro-differential equations in vector-valued function spaces. Journal of Differential Equations. 246(3). 1007–1037. 22 indexed citations

13.

Keyantuo, Valentin & Mahamadi Warma. (2006). The wave equation with Wentzell–Robin boundary conditions on Lp-spaces. Journal of Differential Equations. 229(2). 680–697. 15 indexed citations

14.

Keyantuo, Valentin & Carlos Lizama. (2006). Hölder continuous solutions for integro-differential equations and maximal regularity. Journal of Differential Equations. 230(2). 634–660. 28 indexed citations

15.

Keyantuo, Valentin & Carlos Lizama. (2005). Maximal regularity for a class of integro-differential equations with infinite delay in Banach spaces. Studia Mathematica. 168(1). 25–50. 41 indexed citations

16.

Ciorănescu, Ioana & Valentin Keyantuo. (2000). Entire regularizations of strongly continuous groups and products of analytic generators. Proceedings of the American Mathematical Society. 128(12). 3587–3593. 10 indexed citations

17.

Keyantuo, Valentin, et al.. (1999). On analytic semigroups and cosine functions in Banach spaces. Studia Mathematica. 129(2). 137–156. 6 indexed citations

18.

Keyantuo, Valentin. (1997). Integrated Semigroups and Related Partial Differential Equations. Journal of Mathematical Analysis and Applications. 212(1). 135–153. 14 indexed citations

19.

Keyantuo, Valentin. (1995). The Laplace Transform and the Ascent Method for Abstract Wave Equations. Journal of Differential Equations. 122(1). 27–47. 13 indexed citations

20.

Arendt, Wolfgang, et al.. (1994). Local Integrated Semigroups: Evolution with Jumps of Regularity. Journal of Mathematical Analysis and Applications. 186(2). 572–595. 55 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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