Steffen Lempp

1.3k total citations
77 papers, 543 citations indexed

About

Steffen Lempp is a scholar working on Computational Theory and Mathematics, Geometry and Topology and Artificial Intelligence. According to data from OpenAlex, Steffen Lempp has authored 77 papers receiving a total of 543 indexed citations (citations by other indexed papers that have themselves been cited), including 75 papers in Computational Theory and Mathematics, 28 papers in Geometry and Topology and 23 papers in Artificial Intelligence. Recurrent topics in Steffen Lempp's work include Computability, Logic, AI Algorithms (73 papers), semigroups and automata theory (49 papers) and Advanced Topology and Set Theory (28 papers). Steffen Lempp is often cited by papers focused on Computability, Logic, AI Algorithms (73 papers), semigroups and automata theory (49 papers) and Advanced Topology and Set Theory (28 papers). Steffen Lempp collaborates with scholars based in United States, New Zealand and Singapore. Steffen Lempp's co-authors include Rodney G. Downey, Reed Solomon, Manuel Lerman, S. Barry Cooper, С. С. Гончаров, Theodore A. Slaman, Denis R. Hirschfeldt, André Nies, Joseph S. Miller and Antonio Montalbán and has published in prestigious journals such as Transactions of the American Mathematical Society, Advances in Mathematics and Theoretical Computer Science.

In The Last Decade

Steffen Lempp

71 papers receiving 490 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Steffen Lempp United States 14 527 169 154 103 29 77 543
Sebastiaan A. Terwijn Netherlands 10 371 0.7× 83 0.5× 147 1.0× 109 1.1× 26 0.9× 32 383
Reed Solomon United States 10 262 0.5× 134 0.8× 44 0.3× 50 0.5× 33 1.1× 29 281
Alexander Melnikov New Zealand 12 398 0.8× 192 1.1× 67 0.4× 41 0.4× 53 1.8× 64 426
Dag Normann Norway 10 248 0.5× 94 0.6× 203 1.3× 27 0.3× 82 2.8× 54 308
Wolfram Pohlers Germany 8 224 0.4× 61 0.4× 177 1.1× 15 0.1× 35 1.2× 17 292
Alberto Marcone Italy 9 184 0.3× 111 0.7× 53 0.3× 25 0.2× 51 1.8× 32 218
Tibor Neubrunn Slovakia 7 144 0.3× 65 0.4× 43 0.3× 34 0.3× 69 2.4× 22 232
J. W. Addison United States 7 150 0.3× 88 0.5× 75 0.5× 7 0.1× 39 1.3× 9 227
Piotr Koszmider Poland 9 62 0.1× 158 0.9× 16 0.1× 44 0.4× 195 6.7× 40 248
Toshiyasu Arai Japan 10 136 0.3× 51 0.3× 79 0.5× 10 0.1× 23 0.8× 42 181

Countries citing papers authored by Steffen Lempp

Since Specialization
Citations

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

Fields of papers citing papers by Steffen Lempp

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Steffen Lempp

This figure shows the co-authorship network connecting the top 25 collaborators of Steffen Lempp. A scholar is included among the top collaborators of Steffen Lempp 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 Steffen Lempp. Steffen Lempp 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.
Lempp, Steffen, et al.. (2024). Minimal covers in the Weihrauch degrees. Proceedings of the American Mathematical Society. 152(11). 4893–4901.
2.
Lempp, Steffen, et al.. (2019). On the order dimension of locally countable partial orderings. Proceedings of the American Mathematical Society. 148(7). 2823–2833. 1 indexed citations
3.
Jain, Sanjay, et al.. (2019). Reductions between types of numberings. Annals of Pure and Applied Logic. 170(12). 102716–102716. 7 indexed citations
4.
Kalimullin, I. Sh., et al.. (2016). THE COMPLEMENTS OF LOWER CONES OF DEGREES AND THE DEGREE SPECTRA OF STRUCTURES. Journal of Symbolic Logic. 81(3). 997–1006. 9 indexed citations
5.
Lempp, Steffen, et al.. (2016). Theory spectra and classes of theories. Transactions of the American Mathematical Society. 369(9). 6493–6510. 1 indexed citations
6.
Greenberg, Noam, et al.. (2015). COMPUTABILITY AND UNCOUNTABLE LINEAR ORDERS I: COMPUTABLE CATEGORICITY. Journal of Symbolic Logic. 80(1). 116–144. 2 indexed citations
7.
Downey, Rodney G., et al.. (2014). Random strings and tt-degrees of Turing complete C.E. sets. Logical Methods in Computer Science. Volume 10, Issue 3. 2 indexed citations
8.
Lempp, Steffen, et al.. (2009). Comparing notions of randomness. Theoretical Computer Science. 411(3). 602–616. 4 indexed citations
9.
Lempp, Steffen, et al.. (2009). On the role of the collection principle for Σ⁰₂-formulas in second-order reverse mathematics. Proceedings of the American Mathematical Society. 138(3). 1093–1100. 19 indexed citations
10.
Downey, Rodney G., et al.. (2007). Ideals in computable rings. Journal of Algebra. 314(2). 872–887. 16 indexed citations
11.
Downey, Rodney G., et al.. (2007). Subspaces of computable vector spaces. Journal of Algebra. 314(2). 888–894. 17 indexed citations
12.
Lempp, Steffen, et al.. (2005). Computable categoricity of trees of finite height. Journal of Symbolic Logic. 70(1). 151–215. 19 indexed citations
13.
Гончаров, С. С., et al.. (2003). Trivial, strongly minimal theories are model complete after naming constants. Proceedings of the American Mathematical Society. 131(12). 3901–3912. 13 indexed citations
14.
Lempp, Steffen, et al.. (2002). Group Theoretic Properties of the Group of Computable Automorphisms of a Countable Dense Linear Order. Order. 19(4). 343–364. 1 indexed citations
15.
Downey, Rod, Denis R. Hirschfeldt, Steffen Lempp, & Reed Solomon. (2001). A Δ20 set with no infinite low subset in either it or its complement. Journal of Symbolic Logic. 66(3). 1371–1381. 19 indexed citations
16.
17.
Lempp, Steffen. (1997). The computational complexity of torsion-freeness of finitely presented groups. Bulletin of the Australian Mathematical Society. 56(2). 273–277. 10 indexed citations
18.
Lempp, Steffen & Manuel Lerman. (1997). A finite lattice without critical triple that cannot be embedded into the enumerable Turing degrees. Annals of Pure and Applied Logic. 87(2). 167–185. 12 indexed citations
19.
Lempp, Steffen & Manuel Lerman. (1996). The Decidability of the Existential Theory of the Poset of Recursively Enumerable Degrees with Jump Relations. Advances in Mathematics. 120(1). 1–142. 6 indexed citations
20.
Cooper, S. Barry, Leo Harrington, A. H. Lachlan, Steffen Lempp, & Robert I. Soare. (1991). The d.r.e. degrees are not dense. Annals of Pure and Applied Logic. 55(2). 125–151. 37 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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