Akira Koyama

79 papers and 764 indexed citations i.

About

Akira Koyama is a scholar working on Geometry and Topology, Mathematical Physics and Materials Chemistry. According to data from OpenAlex, Akira Koyama has authored 79 papers receiving a total of 764 indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Geometry and Topology, 17 papers in Mathematical Physics and 11 papers in Materials Chemistry. Recurrent topics in Akira Koyama’s work include Advanced Topology and Set Theory (15 papers), Homotopy and Cohomology in Algebraic Topology (13 papers) and Medical Imaging and Pathology Studies (6 papers). Akira Koyama is often cited by papers focused on Advanced Topology and Set Theory (15 papers), Homotopy and Cohomology in Algebraic Topology (13 papers) and Medical Imaging and Pathology Studies (6 papers). Akira Koyama collaborates with scholars based in Japan, United States and Spain. Akira Koyama's co-authors include Koji Fukao, Yoshihisa Miyamoto, Takashi Yamamoto, Ikuya Yano, Saburo Yamamoto, Yoshitaka Aoki, H. Habazaki, Chunyu Zhu, Keisuke Aoe and Hiroshi Kagamu and has published in prestigious journals such as The Journal of Chemical Physics, Applied Physics Letters and The Journal of Physical Chemistry C.

In The Last Decade

Co-authorship network of co-authors of Akira Koyama i

Fields of papers citing papers by Akira Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Akira Koyama

Since Specialization
Citations

This map shows the geographic impact of Akira Koyama'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 Akira Koyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Akira Koyama 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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2025