Birger Iversen

879 total citations
22 papers, 443 citations indexed

About

Birger Iversen is a scholar working on Geometry and Topology, Mathematical Physics and Algebra and Number Theory. According to data from OpenAlex, Birger Iversen has authored 22 papers receiving a total of 443 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Geometry and Topology, 5 papers in Mathematical Physics and 5 papers in Algebra and Number Theory. Recurrent topics in Birger Iversen's work include Algebraic Geometry and Number Theory (9 papers), Advanced Differential Equations and Dynamical Systems (4 papers) and Commutative Algebra and Its Applications (4 papers). Birger Iversen is often cited by papers focused on Algebraic Geometry and Number Theory (9 papers), Advanced Differential Equations and Dynamical Systems (4 papers) and Commutative Algebra and Its Applications (4 papers). Birger Iversen collaborates with scholars based in Denmark. Birger Iversen's co-authors include Robert M. Fossum, Lê Dũng Tráng, Ole Simonsen, E. Fanghänel and Finn Larsen and has published in prestigious journals such as Lecture notes in mathematics, Inventiones mathematicae and Advances in Mathematics.

In The Last Decade

Birger Iversen

21 papers receiving 349 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Birger Iversen Denmark 13 353 244 155 76 47 22 443
正樹 柏原 China 7 291 0.8× 243 1.0× 135 0.9× 59 0.8× 35 0.7× 14 389
Walter Roelcke Germany 10 257 0.7× 336 1.4× 189 1.2× 51 0.7× 47 1.0× 24 474
Alain Robert Switzerland 6 190 0.5× 243 1.0× 163 1.1× 75 1.0× 60 1.3× 13 403
Geir Ellingsrud Norway 14 510 1.4× 301 1.2× 167 1.1× 100 1.3× 66 1.4× 21 545
Heinz Huber Switzerland 9 222 0.6× 246 1.0× 95 0.6× 37 0.5× 40 0.9× 16 393
John McCleary United States 7 318 0.9× 317 1.3× 141 0.9× 68 0.9× 49 1.0× 22 455
Czes Kosniowski United Kingdom 10 197 0.6× 171 0.7× 62 0.4× 50 0.7× 17 0.4× 26 327
Robert M. Switzer Germany 6 324 0.9× 356 1.5× 146 0.9× 72 0.9× 32 0.7× 14 484
Ulrich Koschorke Germany 13 299 0.8× 279 1.1× 73 0.5× 80 1.1× 37 0.8× 35 405
Helmut Röhrl United States 13 246 0.7× 187 0.8× 147 0.9× 62 0.8× 12 0.3× 32 428

Countries citing papers authored by Birger Iversen

Since Specialization
Citations

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

Fields of papers citing papers by Birger Iversen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Birger Iversen

This figure shows the co-authorship network connecting the top 25 collaborators of Birger Iversen. A scholar is included among the top collaborators of Birger Iversen 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 Birger Iversen. Birger Iversen 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.
Iversen, Birger, et al.. (2014). Lecture Notes on Local Rings. WORLD SCIENTIFIC eBooks. 2 indexed citations
2.
Simonsen, Ole, E. Fanghänel, Birger Iversen, & Finn Larsen. (1994). A mesoionic pyridazinium sulfonate; an unexpected reaction product. Acta Crystallographica Section C Crystal Structure Communications. 50(7). 1150–1152. 1 indexed citations
3.
Iversen, Birger. (1992). Hyperbolic Geometry. Cambridge University Press eBooks. 25 indexed citations
4.
Iversen, Birger. (1990). Lectures on crystallographic groups. 7 indexed citations
5.
Iversen, Birger. (1986). Cohomology of Sheaves. Universitext. 134 indexed citations
6.
Iversen, Birger. (1986). Octahedra and braids. Bulletin de la Société mathématique de France. 79. 197–213. 8 indexed citations
7.
Iversen, Birger. (1977). Amplitude inequalities for complexes. Annales Scientifiques de l École Normale Supérieure. 10(4). 547–558. 14 indexed citations
8.
Iversen, Birger. (1976). Brauer group of a linear algebraic group. Journal of Algebra. 42(2). 295–301. 13 indexed citations
9.
Iversen, Birger. (1976). The geometry of algebraic groups. Advances in Mathematics. 20(1). 57–85. 22 indexed citations
10.
Iversen, Birger. (1976). Local Chern classes. Annales Scientifiques de l École Normale Supérieure. 9(1). 155–169. 14 indexed citations
11.
Iversen, Birger, et al.. (1975). Chern Numbers and Diagonalizable Groups. Journal of the London Mathematical Society. s2-11(2). 223–232. 4 indexed citations
12.
Iversen, Birger & Lê Dũng Tráng. (1974). Calcul du nombre de cusps dans la déformation semi-universelle d'une singularité isolée d'hypersurface complexe. Bulletin de la Société mathématique de France. 79. 99–107. 2 indexed citations
13.
Fossum, Robert M. & Birger Iversen. (1973). On Picard groups of algebraic fibre spaces. Journal of Pure and Applied Algebra. 3(3). 269–280. 38 indexed citations
14.
Iversen, Birger. (1973). Generic Local Structure of the Morphisms in Commutative Algebra. Lecture notes in mathematics. 31 indexed citations
15.
Iversen, Birger. (1972). A fixed point formula for action of tori on algebraic varieties. Inventiones mathematicae. 16(3). 229–236. 49 indexed citations
16.
Iversen, Birger. (1972). On the exceptional tangents to a smooth, plane curve. Mathematische Zeitschrift. 125(4). 359–360. 12 indexed citations
17.
Iversen, Birger. (1971). Critical points of an algebraic function. Inventiones mathematicae. 12(3). 210–224. 17 indexed citations
18.
Iversen, Birger. (1970). Linear Determinants with Applications to the Picard Scheme of a Family of Algebraic Curves. Lecture notes in mathematics. 29 indexed citations
19.
Iversen, Birger. (1970). Numerical Invariants and Multiple Planes. American Journal of Mathematics. 92(4). 968–968. 17 indexed citations
20.
Iversen, Birger. (1965). On flat extensions of Noetherian rings. Proceedings of the American Mathematical Society. 16(6). 1401–1406. 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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