Alexander Langer

542 total citations
16 papers, 152 citations indexed

About

Alexander Langer is a scholar working on Computational Theory and Mathematics, Computer Networks and Communications and Discrete Mathematics and Combinatorics. According to data from OpenAlex, Alexander Langer has authored 16 papers receiving a total of 152 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Computational Theory and Mathematics, 4 papers in Computer Networks and Communications and 2 papers in Discrete Mathematics and Combinatorics. Recurrent topics in Alexander Langer's work include Advanced Graph Theory Research (14 papers), Complexity and Algorithms in Graphs (12 papers) and Graph Labeling and Dimension Problems (3 papers). Alexander Langer is often cited by papers focused on Advanced Graph Theory Research (14 papers), Complexity and Algorithms in Graphs (12 papers) and Graph Labeling and Dimension Problems (3 papers). Alexander Langer collaborates with scholars based in Germany, France and Czechia. Alexander Langer's co-authors include Peter Rossmanith, Joachim Kneis, Somnath Sikdar, Felix Reidl, Eun Jung Kim, Henning Fernau, Christophe Paul, Ignasi Sau, Mathieu Liedloff and Daniel Raible and has published in prestigious journals such as Science, Theoretical Computer Science and Journal of Computer and System Sciences.

In The Last Decade

Alexander Langer

15 papers receiving 136 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Alexander Langer Germany	9	122	50	20	16	12	16	152
Johan M. M. van Rooij Netherlands	7	138 1.1×	64 1.3×	23 1.1×	14 0.9×	9 0.8×	14	163
Dimitrios M. Thilikos France	7	127 1.0×	36 0.7×	18 0.9×	43 2.7×	9 0.8×	25	149
Frank Gurski Germany	9	144 1.2×	72 1.4×	14 0.7×	18 1.1×	14 1.2×	26	186
Pål Grønås Drange Norway	5	135 1.1×	57 1.1×	16 0.8×	11 0.7×	7 0.6×	9	157
Frank Kammer Germany	7	57 0.5×	51 1.0×	13 0.7×	5 0.3×	11 0.9×	21	110
Barnaby Martin United Kingdom	7	119 1.0×	56 1.1×	36 1.8×	30 1.9×	9 0.8×	39	148
Markus Sortland Dregi Norway	3	104 0.9×	42 0.8×	15 0.8×	8 0.5×	5 0.4×	4	124
Frederic Dorn Norway	9	178 1.5×	75 1.5×	34 1.7×	25 1.6×	23 1.9×	16	207
Eelko Penninkx Netherlands	4	145 1.2×	52 1.0×	16 0.8×	22 1.4×	10 0.8×	6	159
Daniel Mölle Germany	5	106 0.9×	61 1.2×	12 0.6×	12 0.8×	33 2.8×	6	130

Countries citing papers authored by Alexander Langer

Since Specialization

Citations

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

Fields of papers citing papers by Alexander Langer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Alexander Langer

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

All Works

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16 of 16 papers shown

Kim, Eun Jung, Alexander Langer, Christophe Paul, et al.. (2015). Linear Kernels and Single-Exponential Algorithms Via Protrusion Decompositions. ACM Transactions on Algorithms. 12(2). 1–41. 28 indexed citations

Langer, Alexander, Felix Reidl, Peter Rossmanith, & Somnath Sikdar. (2014). Practical algorithms for MSO model-checking on tree-decomposable graphs. Computer Science Review. 13-14. 39–74. 14 indexed citations

Ganian, Robert, Petr Hliněný, Joachim Kneis, et al.. (2013). Digraph width measures in parameterized algorithmics. Discrete Applied Mathematics. 168. 88–107. 12 indexed citations

Ganian, Robert, Petr Hliněný, Alexander Langer, et al.. (2013). Lower bounds on the complexity ofMSO1model-checking. Journal of Computer and System Sciences. 80(1). 180–194. 8 indexed citations

Langer, Alexander & Peter Rossmanith. (2013). Fast algorithms for decomposable graphs. RWTH Publications (RWTH Aachen). 3 indexed citations

Langer, Alexander, Peter Rossmanith, & Somnath Sikdar. (2012). Linear-Time Algorithms for Graphs of Bounded Rankwidth: A Fresh Look Using Game Theory (Extended Abstract). RWTH Publications (RWTH Aachen). 2 indexed citations

Langer, Alexander, Felix Reidl, Peter Rossmanith, & Somnath Sikdar. (2012). Evaluation of an MSO-Solver. Society for Industrial and Applied Mathematics eBooks. 55–63. 11 indexed citations

Fernau, Henning, Joachim Kneis, Dieter Kratsch, et al.. (2011). An exact algorithm for the Maximum Leaf Spanning Tree problem. Theoretical Computer Science. 412(45). 6290–6302. 25 indexed citations

Branković, Ljiljana, Marek Cygan, Henning Fernau, et al.. (2011). Breaking the 2n-barrier for Irredundance: Two lines of attack. Journal of Discrete Algorithms. 9(3). 214–230. 10 indexed citations

10.

Kneis, Joachim, Alexander Langer, & Peter Rossmanith. (2010). A New Algorithm for Finding Trees with Many Leaves. Algorithmica. 61(4). 882–897. 10 indexed citations

11.

Kneis, Joachim, Alexander Langer, & Peter Rossmanith. (2009). Derandomizing Non-uniform Color-Coding I. RWTH Publications (RWTH Aachen). 2 indexed citations

12.

Kneis, Joachim & Alexander Langer. (2009). Satellites and Mirrors for Solving Independent Set on Sparse Graphs. RWTH Publications (RWTH Aachen). 3 indexed citations

13.

Kneis, Joachim & Alexander Langer. (2009). A Practical Approach to Courcelle's Theorem. Electronic Notes in Theoretical Computer Science. 251. 65–81. 4 indexed citations

14.

Kneis, Joachim, Alexander Langer, & Peter Rossmanith. (2009). A Fine-grained Analysis of a Simple Independent Set Algorithm. DROPS (Schloss Dagstuhl – Leibniz Center for Informatics). 18 indexed citations

15.

Langer, Alexander, et al.. (1970). Die Schülerschule : Brief an eine Lehrerin. Medical Entomology and Zoology.

16.

Langer, Alexander & R. Loevinger. (1953). A Computational Procedure for the Isotope Method of Brain Tumor Localization. Science. 117(3036). 247–248. 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.

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