K. I. Appel

About

K. I. Appel is a scholar working on Geometry and Topology, Computational Theory and Mathematics and Mathematical Physics. According to data from OpenAlex, K. I. Appel has authored 24 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Geometry and Topology, 6 papers in Computational Theory and Mathematics and 4 papers in Mathematical Physics. Recurrent topics in K. I. Appel’s work include Geometric and Algebraic Topology (5 papers), semigroups and automata theory (4 papers) and advanced mathematical theories (3 papers). K. I. Appel is often cited by papers focused on Geometric and Algebraic Topology (5 papers), semigroups and automata theory (4 papers) and advanced mathematical theories (3 papers). K. I. Appel collaborates with scholars based in United States. K. I. Appel's co-authors include Wolfgang Haken, J. Koch, Paul E. Schupp, T. G. McLaughlin, John G. Ratcliffe, E. T. Parker and J. Barkley Rosser and has published in prestigious journals such as Mathematics of Computation, Inventiones mathematicae and Scientific American.

In The Last Decade

Co-authorship network of co-authors of K. I. Appel i

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Fields of papers citing papers by K. I. Appel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by K. I. Appel. 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 K. I. Appel. The network helps show where K. I. Appel may publish in the future.

Countries citing papers authored by K. I. Appel

Since Specialization

Citations

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

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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