Sunil Kumar

1.3k total citations
77 papers, 901 citations indexed

About

Sunil Kumar is a scholar working on Numerical Analysis, Computational Theory and Mathematics and Computational Mechanics. According to data from OpenAlex, Sunil Kumar has authored 77 papers receiving a total of 901 indexed citations (citations by other indexed papers that have themselves been cited), including 55 papers in Numerical Analysis, 26 papers in Computational Theory and Mathematics and 23 papers in Computational Mechanics. Recurrent topics in Sunil Kumar's work include Differential Equations and Numerical Methods (54 papers), Advanced Mathematical Modeling in Engineering (26 papers) and Advanced Numerical Methods in Computational Mathematics (23 papers). Sunil Kumar is often cited by papers focused on Differential Equations and Numerical Methods (54 papers), Advanced Mathematical Modeling in Engineering (26 papers) and Advanced Numerical Methods in Computational Mathematics (23 papers). Sunil Kumar collaborates with scholars based in India, Spain and Portugal. Sunil Kumar's co-authors include Mukesh Kumar, S. Chandra Sekhara Rao, Pratibhamoy Das, Isabel N. Figueiredo, J. Vigo‐Aguiar, Pedro Figueiredo, Vikas Gupta, Carlos Manta Oliveira, B. Engquist and Luís Pinto and has published in prestigious journals such as SHILAP Revista de lepidopterología, IEEE Access and Applied Mathematics and Computation.

In The Last Decade

Sunil Kumar

69 papers receiving 873 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Sunil Kumar India 19 570 289 179 122 99 77 901
Maı̈tine Bergounioux France 17 362 0.6× 612 2.1× 473 2.6× 193 1.6× 72 0.7× 50 1.0k
K. W. Chang Taiwan 11 410 0.7× 174 0.6× 62 0.3× 181 1.5× 26 0.3× 35 712
Anton Schiela Germany 16 212 0.4× 271 0.9× 266 1.5× 58 0.5× 19 0.2× 56 568
J. M. Carnicer Spain 14 196 0.3× 278 1.0× 575 3.2× 122 1.0× 18 0.2× 77 892
Biao Qu China 15 400 0.7× 443 1.5× 117 0.7× 14 0.1× 9 0.1× 52 875
Paulo Roberto Oliveira Brazil 18 671 1.2× 788 2.7× 258 1.4× 113 0.9× 12 0.1× 49 991
Felipe Álvarez Chile 12 755 1.3× 1.1k 3.8× 387 2.2× 64 0.5× 42 0.4× 28 1.4k
Eskil Hansen Sweden 13 268 0.5× 334 1.2× 155 0.9× 20 0.2× 25 0.3× 39 687
Helmut Gfrerer Austria 16 390 0.7× 473 1.6× 140 0.8× 140 1.1× 9 0.1× 38 754
Christian Meyer Germany 17 211 0.4× 579 2.0× 560 3.1× 122 1.0× 15 0.2× 63 1.1k

Countries citing papers authored by Sunil Kumar

Since Specialization
Citations

This map shows the geographic impact of Sunil Kumar'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 Sunil Kumar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sunil Kumar more than expected).

Fields of papers citing papers by Sunil Kumar

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sunil Kumar. 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 Sunil Kumar. The network helps show where Sunil Kumar may publish in the future.

Co-authorship network of co-authors of Sunil Kumar

This figure shows the co-authorship network connecting the top 25 collaborators of Sunil Kumar. A scholar is included among the top collaborators of Sunil Kumar 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 Sunil Kumar. Sunil Kumar is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Kumar, Sunil, et al.. (2025). Efficient uniformly convergent numerical methods for singularly perturbed parabolic reaction–diffusion systems with discontinuous source term. Journal of Applied Mathematics and Computing. 71(3). 3399–3427.
2.
Priyanka, Priyanka, et al.. (2025). A Fast High‐Order Nonpolynomial Spline Method for Nonlinear Time‐Fractional Telegraph Model for Neutron Transport in a Nuclear Reactor. Mathematical Methods in the Applied Sciences. 48(9). 9751–9769.
3.
Kumar, Sunil, et al.. (2024). Higher order numerical approximations for non-linear time-fractional reaction–diffusion equations exhibiting weak initial singularity. Communications in Nonlinear Science and Numerical Simulation. 139. 108317–108317. 2 indexed citations
4.
Kumar, Sunil, et al.. (2024). A parameter uniform numerical method on a Bakhvalov type mesh for singularly perturbed degenerate parabolic convection–diffusion problems. Journal of Applied Mathematics and Computing. 70(6). 5645–5668.
5.
6.
Singh, Sandeep, et al.. (2024). Mitigation of Colorimetric Variabilities in Smartphone-Assisted Diagnostic Reader Using Domain-Adaptation. IEEE Access. 12. 104857–104868. 1 indexed citations
7.
Kumar, Sunil, et al.. (2023). High‐order schemes and their error analysis for generalized variable coefficients fractional reaction–diffusion equations. Mathematical Methods in the Applied Sciences. 46(16). 16521–16541. 6 indexed citations
8.
Kumar, Sunil, et al.. (2023). A convergent exponential B-spline collocation method for a time-fractional telegraph equation. Computational and Applied Mathematics. 42(2). 8 indexed citations
9.
Kumar, Sunil, et al.. (2023). An Efficient Numerical Method Based on Exponential B-splines for a Time-Fractional Black–Scholes Equation Governing European Options. Computational Economics. 64(4). 1965–2002. 6 indexed citations
10.
Kumar, Sunil, et al.. (2023). A priori and a posteriori error estimation for singularly perturbed delay integro-differential equations. Numerical Algorithms. 95(4). 1561–1582. 2 indexed citations
11.
Kumar, Sunil, et al.. (2023). A fully discrete scheme based on cubic splines and its analysis for time-fractional reaction–diffusion equations exhibiting weak initial singularity. Journal of Computational and Applied Mathematics. 434. 115338–115338. 6 indexed citations
12.
Kumar, Sunil, et al.. (2020). High‐order convergent methods for singularly perturbed quasilinear problems with integral boundary conditions. Mathematical Methods in the Applied Sciences. 47(13). 11106–11119. 12 indexed citations
13.
Kumar, Sunil, et al.. (2017). ECG Biometric Identification - A Review. International Journal of Scientific Research in Science Engineering and Technology. 3(8). 516–519. 1 indexed citations
14.
Figueiredo, Isabel N., et al.. (2016). Automated retina identification based on multiscale elastic registration. Computers in Biology and Medicine. 79. 130–143. 14 indexed citations
15.
Kumar, Sunil & Mukesh Kumar. (2014). High order parameter-uniform discretization for singularly perturbed parabolic partial differential equations with time delay. Computers & Mathematics with Applications. 68(10). 1355–1367. 53 indexed citations
16.
Kumar, Sunil & Mukesh Kumar. (2014). An analysis of overlapping domain decomposition methods for singularly perturbed reaction–diffusion problems. Journal of Computational and Applied Mathematics. 281. 250–262. 10 indexed citations
17.
Kumar, Sunil & S. Chandra Sekhara Rao. (2013). A robust overlapping Schwarz domain decomposition algorithm for time-dependent singularly perturbed reaction–diffusion problems. Journal of Computational and Applied Mathematics. 261. 127–138. 26 indexed citations
18.
Rao, S. Chandra Sekhara & Sunil Kumar. (2011). An almost fourth order uniformly convergent domain decomposition method for a coupled system of singularly perturbed reaction–diffusion equations. Journal of Computational and Applied Mathematics. 235(11). 3342–3354. 21 indexed citations
19.
Kumar, Mukesh & Sunil Kumar. (2011). High order robust approximations for singularly perturbed semilinear systems. Applied Mathematical Modelling. 36(8). 3570–3579. 12 indexed citations
20.
Rao, S. Chandra Sekhara & Sunil Kumar. (2010). A robust numerical method for singularly perturbed semilinear convection-diffusion problems. Neural, Parallel & Scientific Computations archive. 18(2). 155–166. 1 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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