Nobuo Hara

1.1k total citations
21 papers, 483 citations indexed

About

Nobuo Hara is a scholar working on Geometry and Topology, Algebra and Number Theory and Computational Theory and Mathematics. According to data from OpenAlex, Nobuo Hara has authored 21 papers receiving a total of 483 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Geometry and Topology, 15 papers in Algebra and Number Theory and 10 papers in Computational Theory and Mathematics. Recurrent topics in Nobuo Hara's work include Commutative Algebra and Its Applications (14 papers), Algebraic Geometry and Number Theory (13 papers) and Polynomial and algebraic computation (10 papers). Nobuo Hara is often cited by papers focused on Commutative Algebra and Its Applications (14 papers), Algebraic Geometry and Number Theory (13 papers) and Polynomial and algebraic computation (10 papers). Nobuo Hara collaborates with scholars based in Japan and United States. Nobuo Hara's co-authors include Ken Yoshida, Kei-ichi Watanabe, Shunsuke Takagi, Kei Watanabe, Karen E. Smith and Takehiko Yasuda and has published in prestigious journals such as The Journal of the Acoustical Society of America, Transactions of the American Mathematical Society and Advances in Mathematics.

In The Last Decade

Nobuo Hara

21 papers receiving 435 citations

Peers

Nobuo Hara

GT

ANT

CTM

MP

AM

Karl Schwede United States

R. Raphael Canada

Silvio Greco Italy

Bohuslav Balcar Czechia

Ken-ichi Yoshida Japan

Irena Swanson United States

Rodney Y. Sharp United Kingdom

Franz‐Viktor Kuhlmann Canada

Ігор Протасов Ukraine

Paul J. Szeptycki Canada

Karl Schwede United States

Nobuo Hara

460 ×1.0

GT

266 ×0.8

ANT

126 ×0.7

CTM

158 ×1.4

MP

29 ×1.0

AM

Citations per year, relative to Nobuo Hara Nobuo Hara (= 1×) peers Karl Schwede

Countries citing papers authored by Nobuo Hara

Since Specialization

Citations

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

Fields of papers citing papers by Nobuo Hara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nobuo Hara

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

All Works

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20 of 20 papers shown

1.

Hara, Nobuo, et al.. (2020). The FFRT property of two-dimensional normal graded rings and orbifold curves. Advances in Mathematics. 370. 107215–107215. 2 indexed citations

2.

Hara, Nobuo, et al.. (2013). F-blowups of normal surface singularities. Algebra & Number Theory. 7(3). 733–763. 3 indexed citations

3.

Hara, Nobuo. (2011). F-blowups of F-regular surface singularities. Proceedings of the American Mathematical Society. 140(7). 2215–2226. 3 indexed citations

4.

Hara, Nobuo, et al.. (2010). Splitting of Frobenius sandwiches. 3 indexed citations

5.

Hara, Nobuo. (2006). F-pure thresholds and F-jumping exponents in dimension two. Mathematical Research Letters. 13(5). 747–760. 18 indexed citations

6.

Hara, Nobuo. (2005). A CharacteristicpAnalog of Multiplier Ideals and Applications^#. Communications in Algebra. 33(10). 3375–3388. 10 indexed citations

7.

Hara, Nobuo & Shunsuke Takagi. (2004). On a generalization of test ideals. Nagoya Mathematical Journal. 175. 59–74. 49 indexed citations

8.

Hara, Nobuo & Ken Yoshida. (2003). A generalization of tight closure and multiplier ideals. Transactions of the American Mathematical Society. 355(8). 3143–3174. 105 indexed citations

9.

Hara, Nobuo, et al.. (2002). F-Rationality of Rees Algebras. Journal of Algebra. 247(1). 153–190. 7 indexed citations

10.

Hara, Nobuo & Shunsuke Takagi. (2002). Some remarks on a generalization of test ideals. arXiv (Cornell University). 3 indexed citations

11.

Hara, Nobuo, et al.. (2002). Rees Algebras of F-regular Type. Journal of Algebra. 247(1). 191–218. 12 indexed citations

12.

Hara, Nobuo. (2001). Geometric interpretation of tight closure and test ideals. Transactions of the American Mathematical Society. 353(5). 1885–1906. 34 indexed citations

13.

Hara, Nobuo & Kei-ichi Watanabe. (2001). F-regular and F-pure rings vs. log terminal and log canonical singularities. Journal of Algebraic Geometry. 11(2). 363–392. 87 indexed citations

14.

Hara, Nobuo & Karen E. Smith. (2001). The strong test ideal. Illinois Journal of Mathematics. 45(3). 4 indexed citations

15.

Hara, Nobuo. (1999). A characteristic p proof of Wahl's vanishing theorem for rational surface singularities. Archiv der Mathematik. 73(4). 256–261. 1 indexed citations

16.

Hara, Nobuo. (1998). Classification of Two-Dimensional F-Regular and F-Pure Singularities. Advances in Mathematics. 133(1). 33–53. 25 indexed citations

17.

Hara, Nobuo. (1998). A characterization of rational singularities in terms of injectivity of Frobenius maps. American Journal of Mathematics. 120(5). 981–996. 96 indexed citations

18.

Hara, Nobuo & Kei Watanabe. (1996). The injectivity of Frobenius acting on cohomology and local cohomology modules. manuscripta mathematica. 90(1). 301–315. 12 indexed citations

19.

Hara, Nobuo. (1995). F-Regularity and F-Purity of Graded Rings. Journal of Algebra. 172(3). 804–818. 6 indexed citations

20.

Hara, Nobuo, et al.. (1988). Calculation of sound radiation from an aperture of a building by means of Kirchhoff's diffraction formula. The Journal of the Acoustical Society of America. 84(S1). S65–S65. 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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