Gregory Derfel

548 total citations
23 papers, 347 citations indexed

About

Gregory Derfel is a scholar working on Applied Mathematics, Mathematical Physics and Numerical Analysis. According to data from OpenAlex, Gregory Derfel has authored 23 papers receiving a total of 347 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Applied Mathematics, 10 papers in Mathematical Physics and 9 papers in Numerical Analysis. Recurrent topics in Gregory Derfel's work include Nonlinear Differential Equations Analysis (6 papers), Differential Equations and Numerical Methods (6 papers) and Mathematical Dynamics and Fractals (6 papers). Gregory Derfel is often cited by papers focused on Nonlinear Differential Equations Analysis (6 papers), Differential Equations and Numerical Methods (6 papers) and Mathematical Dynamics and Fractals (6 papers). Gregory Derfel collaborates with scholars based in Israel, Austria and New Zealand. Gregory Derfel's co-authors include Arieh Iserles, Nira Dyn, David Levin, Peter J. Grabner, Stanislav Molchanov, Bruce van Brunt, R. Schilling, G.C. Wake, Kenneth L. Cooke and A. N. Sharkovsky and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Journal of Physics A Mathematical and Theoretical and Journal of Approximation Theory.

In The Last Decade

Gregory Derfel

21 papers receiving 304 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Gregory Derfel Israel 9 152 126 116 79 63 23 347
Fengxin Chen China 9 100 0.7× 78 0.6× 72 0.6× 61 0.8× 73 1.2× 34 310
George R. Spalding United States 6 169 1.1× 96 0.8× 80 0.7× 33 0.4× 41 0.7× 11 342
E. R. Love Australia 11 245 1.6× 88 0.7× 110 0.9× 88 1.1× 42 0.7× 50 443
Roman Wituła Poland 11 79 0.5× 121 1.0× 173 1.5× 70 0.9× 71 1.1× 79 484
Svetlin G. Georgiev Bulgaria 10 293 1.9× 104 0.8× 139 1.2× 69 0.9× 52 0.8× 87 446
Yusif S. Gasimov Azerbaijan 11 73 0.5× 64 0.5× 94 0.8× 73 0.9× 33 0.5× 36 278
M. A. Al-Gwaiz Saudi Arabia 6 103 0.7× 46 0.4× 89 0.8× 106 1.3× 56 0.9× 12 265
Alan Feldstein United States 14 132 0.9× 319 2.5× 156 1.3× 19 0.2× 150 2.4× 30 533
Jie Xin China 10 182 1.2× 152 1.2× 176 1.5× 166 2.1× 151 2.4× 50 563

Countries citing papers authored by Gregory Derfel

Since Specialization
Citations

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

Fields of papers citing papers by Gregory Derfel

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Gregory Derfel

This figure shows the co-authorship network connecting the top 25 collaborators of Gregory Derfel. A scholar is included among the top collaborators of Gregory Derfel 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 Gregory Derfel. Gregory Derfel 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.
Derfel, Gregory & Bruce van Brunt. (2024). On the Balanced Pantograph Equation of Mixed Type. Ukrainian Mathematical Journal. 75(12). 1841–1849.
2.
Molchanov, Stanislav, Gregory Derfel, & Leonid V. Bogachev. (2015). Analysis of the archetypal functional equation in the non-critical case. 132–141. 3 indexed citations
3.
Derfel, Gregory, Bruce van Brunt, & G.C. Wake. (2012). A cell growth model revisited. Massey Research Online (Massey University). 19. 75–85. 12 indexed citations
4.
Derfel, Gregory, et al.. (2012). Laplace operators on fractals and related functional equations. Journal of Physics A Mathematical and Theoretical. 45(46). 463001–463001. 31 indexed citations
5.
Derfel, Gregory, et al.. (2007). Asymptotics of the Poincaré functions. 113–129. 1 indexed citations
6.
Derfel, Gregory, et al.. (2004). Random matrices over Z p and testing of random number generators (RNG's). Random Operators and Stochastic Equations. 12(1). 1–10. 1 indexed citations
7.
Derfel, Gregory, E. Yu. Romanenko, & A. N. Sharkovsky. (2000). Asymptotic Discontinuity of Smooth Solutions of Nonlinear q-Difference Equations. Ukrainian Mathematical Journal. 52(12). 1841–1857.
8.
Derfel, Gregory, et al.. (2000). Divide-and-conquer recurrences — classification of asymptotics. Aequationes Mathematicae. 60(3). 243–257. 2 indexed citations
9.
Derfel, Gregory, E. Yu. Romanenko, & A. N. Sharkovsky. (2000). Long-time properties of solutions of simplest nonlinear q-difference equations. The Journal of Difference Equations and Applications. 6(5). 485–511. 6 indexed citations
10.
Derfel, Gregory, et al.. (1998). Asymptotic analysis of a class of functional equations. Aequationes Mathematicae. 55(1-2). 91–105. 1 indexed citations
11.
Derfel, Gregory & Arieh Iserles. (1997). The Pantograph Equation in the Complex Plane. Journal of Mathematical Analysis and Applications. 213(1). 117–132. 85 indexed citations
12.
Cooke, Kenneth L. & Gregory Derfel. (1996). On the Sharpness of a Theorem by Cooke and Verduyn Lunel. Journal of Mathematical Analysis and Applications. 197(2). 379–391. 3 indexed citations
13.
Cooke, Kenneth L. & Gregory Derfel. (1996). On the Sharpness of a Theorem by Cooke and Verduyn Lunel. Journal of Mathematical Analysis and Applications. 200(2). 518–518. 1 indexed citations
14.
Derfel, Gregory, et al.. (1996). On the asymptotics of solutions of a class of linear functional-differential equations. European Journal of Applied Mathematics. 7(5). 511–518. 31 indexed citations
15.
Derfel, Gregory & R. Schilling. (1996). Spatially chaotic configurations and functional equations with rescaling. Journal of Physics A Mathematical and General. 29(15). 4537–4547. 9 indexed citations
16.
Derfel, Gregory, Nira Dyn, & David Levin. (1995). Generalized Refinement Equations and Subdivision Processes. Journal of Approximation Theory. 80(2). 272–297. 70 indexed citations
17.
Derfel, Gregory. (1995). Functional-Differential Equations with Compressed Arguments and Polynomial Coefficients: Asymptotics of the Solutions. Journal of Mathematical Analysis and Applications. 193(2). 671–679. 6 indexed citations
18.
Derfel, Gregory & Stanislav Molchanov. (1990). Spectral methods in the theory of differential-functional equations. Mathematical Notes. 47(3). 254–260. 9 indexed citations
19.
Derfel, Gregory. (1989). Probabilistic method for a class of functional-differential equations. Ukrainian Mathematical Journal. 41(10). 1137–1141. 46 indexed citations
20.
Derfel, Gregory. (1982). Behavior of solutions of functional and differential-functional equations with several transformations of the independent variable. Ukrainian Mathematical Journal. 34(3). 286–291. 22 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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