Jörg Flum

4.5k total citations · 2 hit papers
46 papers, 1.9k citations indexed

About

Jörg Flum is a scholar working on Computational Theory and Mathematics, Artificial Intelligence and Computer Networks and Communications. According to data from OpenAlex, Jörg Flum has authored 46 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Computational Theory and Mathematics, 10 papers in Artificial Intelligence and 4 papers in Computer Networks and Communications. Recurrent topics in Jörg Flum's work include Advanced Graph Theory Research (20 papers), Complexity and Algorithms in Graphs (20 papers) and semigroups and automata theory (19 papers). Jörg Flum is often cited by papers focused on Advanced Graph Theory Research (20 papers), Complexity and Algorithms in Graphs (20 papers) and semigroups and automata theory (19 papers). Jörg Flum collaborates with scholars based in Germany, China and Spain. Jörg Flum's co-authors include Martin Grohe, Heinz-Dieter Ebbinghaus, Markus Frick, Yijia Chen, Yijia Chen, Martin Ziegler, Moritz Müller, Mario Rodríguez-Artalejo, Yijia Chen and Frances Rosamond and has published in prestigious journals such as Journal of the ACM, Lecture notes in mathematics and SIAM Journal on Computing.

In The Last Decade

Jörg Flum

40 papers receiving 1.8k citations

Hit Papers

Parameterized Complexity Theory 1995 2026 2005 2015 2006 1995 250 500 750
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Parameterized Complexity Theory
    2006 863 citations Jörg Flum, Martin Grohe Digital Access to Libraries (Université catholique de Louvain (UCL), l'Université de Namur (UNamur) and the Université Saint-Louis (USL-B)) profile →
  2. Finite Model Theory
    1995 526 citations Heinz-Dieter Ebbinghaus, Jörg Flum profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Jörg Flum Germany 12 1.5k 739 545 156 153 46 1.9k
Virginia Vassilevska Williams United States 18 853 0.6× 472 0.6× 403 0.7× 71 0.5× 92 0.6× 71 1.3k
Dimitrios M. Thilikos Greece 25 1.6k 1.1× 336 0.5× 809 1.5× 244 1.6× 64 0.4× 125 2.1k
Venkatesh Raman India 22 1.0k 0.7× 970 1.3× 639 1.2× 99 0.6× 182 1.2× 111 1.9k
Daniel Lokshtanov Norway 22 2.0k 1.4× 284 0.4× 772 1.4× 333 2.1× 56 0.4× 159 2.4k
Ilan Newman Israel 23 1.1k 0.7× 687 0.9× 429 0.8× 147 0.9× 40 0.3× 86 1.4k
Andrzej Proskurowski United States 18 1.4k 0.9× 406 0.5× 704 1.3× 214 1.4× 138 0.9× 63 1.9k
Michał Pilipczuk Poland 14 1.3k 0.9× 203 0.3× 456 0.8× 217 1.4× 41 0.3× 101 1.5k
Henning Fernau Germany 18 1.0k 0.7× 394 0.5× 354 0.6× 70 0.4× 28 0.2× 190 1.3k
Bruno Courcelle France 26 2.9k 1.9× 1.3k 1.8× 550 1.0× 320 2.1× 73 0.5× 105 3.3k
Marcin Pilipczuk Poland 15 1.2k 0.8× 196 0.3× 464 0.9× 206 1.3× 30 0.2× 102 1.5k

Countries citing papers authored by Jörg Flum

Since Specialization
Citations

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

Fields of papers citing papers by Jörg Flum

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Jörg Flum

This figure shows the co-authorship network connecting the top 25 collaborators of Jörg Flum. A scholar is included among the top collaborators of Jörg Flum 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 Jörg Flum. Jörg Flum 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.
Ebbinghaus, Heinz-Dieter, Jörg Flum, & Wolfgang Thomas. (2021). Mathematical Logic. Graduate texts in mathematics. 1 indexed citations
2.
Chen, Yijia & Jörg Flum. (2020). FO-Definability of Shrub-Depth. DROPS (Schloss Dagstuhl – Leibniz Center for Informatics). 16.
3.
Chen, Yijia & Jörg Flum. (2019). Some lower bounds in parameterized AC0. Information and Computation. 267. 116–134. 1 indexed citations
4.
Chen, Yijia, et al.. (2017). Slicewise Definability in First-Order Logic with Bounded Quantifier Rank. DROPS (Schloss Dagstuhl – Leibniz Center for Informatics). 16. 1 indexed citations
5.
Chen, Yijia & Jörg Flum. (2010). On the complexity of Gödel's proof predicate. Journal of Symbolic Logic. 75(1). 239–254. 3 indexed citations
6.
Chen, Yijia & Jörg Flum. (2009). A Logic for PTIME and a Parameterized Halting Problem. Lecture notes in computer science. 15. 251–276. 1 indexed citations
7.
Chen, Yijia, Jörg Flum, & Moritz Müller. (2007). Lower Bounds for Kernelizations. Dipòsit Digital de Documents de la UAB (Universitat Autònoma de Barcelona). 14. 2 indexed citations
8.
Downey, Rod, et al.. (2007). Bounded fixed-parameter tractability and reducibility. Annals of Pure and Applied Logic. 148(1-3). 1–19.
9.
Chen, Yijia & Jörg Flum. (2007). The parameterized complexity of maximality and minimality problems. Annals of Pure and Applied Logic. 151(1). 22–61. 10 indexed citations
10.
Flum, Jörg & Martin Grohe. (2006). Parameterized Complexity Theory. Digital Access to Libraries (Université catholique de Louvain (UCL), l'Université de Namur (UNamur) and the Université Saint-Louis (USL-B)). 863 indexed citations breakdown →
11.
Chen, Yijia, Jörg Flum, & Martin Grohe. (2005). Machine-based methods in parameterized complexity theory. Theoretical Computer Science. 339(2-3). 167–199. 17 indexed citations
12.
Chen, Yijia & Jörg Flum. (2005). On miniaturized problems in parameterized complexity theory. Theoretical Computer Science. 351(3). 314–336. 4 indexed citations
13.
Flum, Jörg, et al.. (2005). Bounded fixed-parameter tractability andlog2nnondeterministic bits. Journal of Computer and System Sciences. 72(1). 34–71. 16 indexed citations
14.
Flum, Jörg & Martin Grohe. (2004). Parametrized Complexity and Subexponential Time (Column: Computational Complexity).. Bulletin of the European Association for Theoretical Computer Science. 84(7). 71–100. 8 indexed citations
15.
Flum, Jörg & Martin Grohe. (2004). The Parameterized Complexity of Counting Problems. SIAM Journal on Computing. 33(4). 892–922. 95 indexed citations
16.
Flum, Jörg & Martin Grohe. (2003). Describing parameterized complexity classes. Information and Computation. 187(2). 291–319. 35 indexed citations
17.
Flum, Jörg, et al.. (2000). Games and total Datalog¬ queries. Theoretical Computer Science. 239(2). 257–276. 1 indexed citations
18.
Flum, Jörg. (2000). Games, Kernels, and Antitone Operations. Order. 17(1). 61–73. 1 indexed citations
19.
Flum, Jörg & Martin Ziegler. (1980). Topological Model Theory. Lecture notes in mathematics. 18 indexed citations
20.
Flum, Jörg. (1972). Hanf numbers and well-ordering numbers. Archive for Mathematical Logic. 15(3-4). 164–178. 2 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Virginia Vassilevska Williams Breakdown of academic impact, for papers by Dimitrios M. Thilikos Breakdown of academic impact, for papers by Venkatesh Raman Breakdown of academic impact, for papers by Daniel Lokshtanov Breakdown of academic impact, for papers by Ilan Newman Breakdown of academic impact, for papers by Andrzej Proskurowski Breakdown of academic impact, for papers by Michał Pilipczuk Breakdown of academic impact, for papers by Henning Fernau Breakdown of academic impact, for papers by Bruno Courcelle Breakdown of academic impact, for papers by Marcin Pilipczuk
Rankless by CCL
2026