Jürgen Appell

1.4k total citations
56 papers, 978 citations indexed

About

Jürgen Appell is a scholar working on Mathematical Physics, Applied Mathematics and Computational Theory and Mathematics. According to data from OpenAlex, Jürgen Appell has authored 56 papers receiving a total of 978 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Mathematical Physics, 22 papers in Applied Mathematics and 14 papers in Computational Theory and Mathematics. Recurrent topics in Jürgen Appell's work include Advanced Banach Space Theory (10 papers), Differential Equations and Boundary Problems (9 papers) and Numerical methods in inverse problems (9 papers). Jürgen Appell is often cited by papers focused on Advanced Banach Space Theory (10 papers), Differential Equations and Boundary Problems (9 papers) and Numerical methods in inverse problems (9 papers). Jürgen Appell collaborates with scholars based in Germany, Italy and Poland. Jürgen Appell's co-authors include Petr P. Zabrejko, Espedito De Pascale, Alfonso Vignoli, Józef Banaś, П. П. Забрейко, Martin Väth, Maria Patrizia Pera, Alois Kufner, Nelson Merentes and B. López and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Nonlinear Analysis and Pacific Journal of Mathematics.

In The Last Decade

Jürgen Appell

52 papers receiving 844 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Jürgen Appell Germany 12 656 365 292 206 180 56 978
Petr P. Zabrejko Germany 10 450 0.7× 284 0.8× 270 0.9× 238 1.2× 165 0.9× 41 889
Evgeniy Pustylnik Israel 11 743 1.1× 488 1.3× 302 1.0× 137 0.7× 48 0.3× 36 1.1k
B. G. Pachpatte India 22 1.8k 2.8× 216 0.6× 266 0.9× 313 1.5× 426 2.4× 182 2.1k
Jaroslav Kurzweil Czechia 17 519 0.8× 401 1.1× 237 0.8× 194 0.9× 61 0.3× 84 1.2k
Markus Haase Netherlands 12 486 0.7× 394 1.1× 209 0.7× 42 0.2× 85 0.5× 31 720
Lech Górniewicz Poland 19 1.1k 1.7× 288 0.8× 663 2.3× 728 3.5× 332 1.8× 72 1.7k
Michael Th. Rassias Switzerland 21 1.1k 1.6× 195 0.5× 159 0.5× 349 1.7× 51 0.3× 98 1.3k
Massimo Furi Italy 15 488 0.7× 212 0.6× 391 1.3× 307 1.5× 32 0.2× 84 844
Takaŝi Kusano Japan 23 1.6k 2.4× 278 0.8× 503 1.7× 126 0.6× 149 0.8× 171 1.9k
Th. M. Rassias Greece 14 779 1.2× 306 0.8× 590 2.0× 417 2.0× 41 0.2× 38 1.4k

Countries citing papers authored by Jürgen Appell

Since Specialization
Citations

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

Fields of papers citing papers by Jürgen Appell

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Jürgen Appell

This figure shows the co-authorship network connecting the top 25 collaborators of Jürgen Appell. A scholar is included among the top collaborators of Jürgen Appell 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 Jürgen Appell. Jürgen Appell 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.
Appell, Jürgen, et al.. (2021). Hölder-type spaces, singular operators, and fixed point theorems. Fixed Point Theory. 22(1). 31–58. 6 indexed citations
2.
Appell, Jürgen, et al.. (2018). Funktionen mit Stammfunktion. Mathematische Semesterberichte. 66(1). 49–72. 1 indexed citations
3.
Appell, Jürgen, et al.. (2008). Iterative Approximation for a Boundary Value Problem Arising for the Electrical Potential on a Cylindrical Double Layer. Zeitschrift für Analysis und ihre Anwendungen. 27(3). 283–300.
4.
Appell, Jürgen, Pavel Drábek, & Raffaele Chiappinelli. (2004). Mini-Workshop: Nonlinear Spectral and Eigenvalue Theory. Oberwolfach Reports. 1(1). 407–438. 1 indexed citations
5.
Appell, Jürgen, Espedito De Pascale, & Alfonso Vignoli. (2004). Nonlinear Spectral Theory. Cineca Institutional Research Information System (Tor Vergata University). 89 indexed citations
6.
Appell, Jürgen. (2001). Insiemi ed Operatori "Piccoli" in Analisi Funzionale. OpenstarTs (Univeristy of Trieste https://www.units.it/). 5 indexed citations
7.
Appell, Jürgen, Espedito De Pascale, & Alfonso Vignoli. (2001). A Semilinear Furi-Martelli-Vignoli Spectrum. Zeitschrift für Analysis und ihre Anwendungen. 20(3). 565–577. 1 indexed citations
8.
Appell, Jürgen, et al.. (2000). Partial integral operators and integro-differential equations. Marcel Dekker eBooks. 36 indexed citations
9.
Appell, Jürgen, et al.. (2000). Recent Trends in Nonlinear Analysis. Birkhäuser Basel eBooks. 9 indexed citations
10.
Appell, Jürgen, Martin Väth, & Alfonso Vignoli. (1999). Compactness and Existence Results for Ordinary Differential Equations in Banach Spaces. Zeitschrift für Analysis und ihre Anwendungen. 18(3). 569–584. 5 indexed citations
11.
Appell, Jürgen. (1999). Ein „merkwürdiges” Spektrum für nichtlineare Operatoren. Mathematica Bohemica. 124. 221–229. 1 indexed citations
12.
Appell, Jürgen, et al.. (1997). New results on newton-kantorovich approximations with applications to nonlinear integral equations. Numerical Functional Analysis and Optimization. 18(1-2). 1–17. 35 indexed citations
13.
Appell, Jürgen, et al.. (1996). On the Application of the Newton–Kantorovich Method to Nonlinear Partial Integral Equations. Zeitschrift für Analysis und ihre Anwendungen. 15(2). 397–418. 1 indexed citations
14.
Appell, Jürgen, et al.. (1995). Problèmes aux limites pour des equations intégro-différentielles de type Barbachine. Zeitschrift für Analysis und ihre Anwendungen. 14(1). 95–104. 2 indexed citations
15.
Appell, Jürgen & Martin Väth. (1993). Weakly Singular Hammerstein-Volterra Operators in Orlicz and Hölder Spaces. Zeitschrift für Analysis und ihre Anwendungen. 12(4). 663–676. 8 indexed citations
16.
Appell, Jürgen, et al.. (1992). Multivalued superposition operators in ideal spaces of vector functions III. Indagationes Mathematicae. 3(1). 1–9. 11 indexed citations
17.
Appell, Jürgen, et al.. (1990). General existence theorems for quasilinear elliptic systems without monotonicity. Journal of Mathematical Analysis and Applications. 145(1). 26–38. 3 indexed citations
18.
Appell, Jürgen, Espedito De Pascale, & Petr P. Zabrejko. (1987). An Application of B. N. Sadovskij’s Fixed Point Principle to Nonlinear Singular Equations. Zeitschrift für Analysis und ihre Anwendungen. 6(3). 193–208. 12 indexed citations
19.
Appell, Jürgen, et al.. (1983). On a theorem of M.A. Krasnosel'skij. Nonlinear Analysis. 7(7). 695–706. 3 indexed citations
20.
Appell, Jürgen. (1981). Implicit functions, nonlinear integral equations, and the measure of noncompactness of the superposition operator. Journal of Mathematical Analysis and Applications. 83(1). 251–263. 42 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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