Masamichi Takesaki

7.8k total citations · 2 hit papers
65 papers, 3.8k citations indexed

About

Masamichi Takesaki is a scholar working on Mathematical Physics, Algebra and Number Theory and Applied Mathematics. According to data from OpenAlex, Masamichi Takesaki has authored 65 papers receiving a total of 3.8k indexed citations (citations by other indexed papers that have themselves been cited), including 46 papers in Mathematical Physics, 43 papers in Algebra and Number Theory and 25 papers in Applied Mathematics. Recurrent topics in Masamichi Takesaki's work include Advanced Topics in Algebra (41 papers), Advanced Operator Algebra Research (39 papers) and Holomorphic and Operator Theory (21 papers). Masamichi Takesaki is often cited by papers focused on Advanced Topics in Algebra (41 papers), Advanced Operator Algebra Research (39 papers) and Holomorphic and Operator Theory (21 papers). Masamichi Takesaki collaborates with scholars based in Japan, United States and Australia. Masamichi Takesaki's co-authors include Gert K. Pedersen, Alain Connes, Colin E. Sutherland, Yoshiomi Nakagami, Richard H. Herman, Yasuyuki Kawahigashi, Jun Tomiyama, Daniel Kastler, Vaughan F. R. Jones and Rudolf Haag and has published in prestigious journals such as Communications in Mathematical Physics, Annals of Mathematics and Lecture notes in mathematics.

In The Last Decade

Masamichi Takesaki

62 papers receiving 3.1k citations

Hit Papers

Theory of Operator Algebras II 1970 2026 1988 2007 2003 1970 400 800 1.2k
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. Theory of Operator Algebras II
    2003 1.2k citations Masamichi Takesaki CERN Document Server (European Organization for Nuclear Research) profile →
  2. Tomita's Theory of Modular Hilbert Algebras and its Applications
    1970 411 citations Masamichi Takesaki Lecture notes in mathematics profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Masamichi Takesaki Japan 27 3.0k 2.1k 978 829 565 65 3.8k
Richard V. Kadison United States 34 3.2k 1.1× 2.7k 1.3× 1.0k 1.1× 1.3k 1.6× 590 1.0× 88 4.6k
J. R. Ringrose United Kingdom 21 1.8k 0.6× 1.5k 0.7× 603 0.6× 768 0.9× 301 0.5× 40 2.6k
Ola Bratteli Norway 24 2.8k 0.9× 1.6k 0.8× 809 0.8× 748 0.9× 1.6k 2.8× 92 4.6k
George W. Mackey United States 25 1.8k 0.6× 836 0.4× 880 0.9× 614 0.7× 778 1.4× 36 3.4k
Jacques Dixmier France 18 1.9k 0.6× 1.4k 0.7× 873 0.9× 586 0.7× 182 0.3× 37 2.7k
Nolan R. Wallach United States 28 2.3k 0.8× 1.1k 0.5× 2.3k 2.4× 1.1k 1.3× 233 0.4× 124 3.8k
Erling Størmer Norway 28 1.7k 0.6× 1.4k 0.7× 565 0.6× 434 0.5× 724 1.3× 93 2.7k
Harish-chandra Harish-Chandra United States 32 3.5k 1.1× 1.4k 0.6× 2.2k 2.2× 1.1k 1.3× 132 0.2× 60 4.4k
S. L. Woronowicz Poland 24 2.5k 0.8× 2.4k 1.1× 2.6k 2.7× 314 0.4× 621 1.1× 52 4.1k
Marc A. Rieffel United States 28 3.0k 1.0× 2.0k 1.0× 1.4k 1.4× 764 0.9× 304 0.5× 58 4.0k

Countries citing papers authored by Masamichi Takesaki

Since Specialization
Citations

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

Fields of papers citing papers by Masamichi Takesaki

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masamichi Takesaki

This figure shows the co-authorship network connecting the top 25 collaborators of Masamichi Takesaki. A scholar is included among the top collaborators of Masamichi Takesaki 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 Masamichi Takesaki. Masamichi Takesaki 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.
Takesaki, Masamichi. (2003). Theory of Operator Algebras III. CERN Document Server (European Organization for Nuclear Research). 136 indexed citations
2.
Takesaki, Masamichi, et al.. (1999). Operator valued weights without structure theory. Transactions of the American Mathematical Society. 351(1). 323–341. 3 indexed citations
3.
Takesaki, Masamichi, et al.. (1992). An open mapping theorem on homogeneous spaces. Journal of the Australian Mathematical Society Series A Pure Mathematics and Statistics. 53(1). 51–54. 2 indexed citations
4.
Kawahigashi, Yasuyuki, Colin E. Sutherland, & Masamichi Takesaki. (1992). The structure of the automorphism group of an injective factor and the cocycle conjugacy of discrete abelian group actions. Acta Mathematica. 169(0). 105–130. 46 indexed citations
5.
Jones, Vaughan F. R. & Masamichi Takesaki. (1984). Actions of compact abelian groups on semifinite injective factors. Acta Mathematica. 153(0). 213–258. 35 indexed citations
6.
Takesaki, Masamichi. (1983). Structure of Factors and Automorphism Groups. 10 indexed citations
7.
Nakagami, Yoshiomi & Masamichi Takesaki. (1979). Duality for Crossed Products of von Neumann Algebras. Lecture notes in mathematics. 90 indexed citations
8.
Kastler, Daniel & Masamichi Takesaki. (1979). Group duality and the Kubo-Martin-Schwinger condition. Communications in Mathematical Physics. 70(3). 193–212. 3 indexed citations
9.
Takesaki, Masamichi, et al.. (1972). Duality and subgroups, II. Journal of Functional Analysis. 11(2). 184–190. 37 indexed citations
10.
Takesaki, Masamichi. (1972). Conditional expectations in von Neumann algebras. Journal of Functional Analysis. 9(3). 306–321. 269 indexed citations
11.
Takesaki, Masamichi. (1971). Duality and von Neumann algebras. Bulletin of the American Mathematical Society. 77(4). 553–557. 19 indexed citations
12.
Herman, Richard H. & Masamichi Takesaki. (1970). States and automorphism groups of operator algebras. Communications in Mathematical Physics. 19(2). 142–160. 55 indexed citations
13.
Takesaki, Masamichi. (1969). Remarks on the reduction theory of von Neumann algebras. Proceedings of the American Mathematical Society. 20(2). 434–434. 3 indexed citations
14.
Takesaki, Masamichi. (1969). Remarks on the Reduction Theory of Von Neumann Algebras. Proceedings of the American Mathematical Society. 20(2). 434–434. 1 indexed citations
15.
Takesaki, Masamichi. (1967). Covariant representations of C*-algebras and their locally compact automorphism groups. Acta Mathematica. 119(0). 273–303. 85 indexed citations
16.
Takesaki, Masamichi. (1967). A Duality in the Representation Theory of C ∗ -Algebras. Annals of Mathematics. 85(3). 370–370. 16 indexed citations
17.
18.
Takesaki, Masamichi. (1963). On some representations of $C^*$-algebras. Tohoku Mathematical Journal. 15(1). 5 indexed citations
19.
Nakamura, Masahiro, Masamichi Takesaki, & Hisaharu Umegaki. (1960). A remark on the expectations of operator algebras. Kodai Mathematical Journal. 12(2). 26 indexed citations
20.
Takesaki, Masamichi. (1959). On the singularity of a positive linear functional on operator algebra. Proceedings of the Japan Academy Series A Mathematical Sciences. 35(7). 21 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 Richard V. Kadison Breakdown of academic impact, for papers by J. R. Ringrose Breakdown of academic impact, for papers by Ola Bratteli Breakdown of academic impact, for papers by George W. Mackey Breakdown of academic impact, for papers by Jacques Dixmier Breakdown of academic impact, for papers by Nolan R. Wallach Breakdown of academic impact, for papers by Erling Størmer Breakdown of academic impact, for papers by Harish-chandra Harish-Chandra Breakdown of academic impact, for papers by S. L. Woronowicz Breakdown of academic impact, for papers by Marc A. Rieffel
Rankless by CCL
2026