Ragni Piene

1.1k total citations
25 papers, 268 citations indexed

About

Ragni Piene is a scholar working on Geometry and Topology, Mathematical Physics and Algebra and Number Theory. According to data from OpenAlex, Ragni Piene has authored 25 papers receiving a total of 268 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Geometry and Topology, 6 papers in Mathematical Physics and 4 papers in Algebra and Number Theory. Recurrent topics in Ragni Piene's work include Algebraic Geometry and Number Theory (11 papers), Advanced Algebra and Geometry (4 papers) and Advanced Numerical Analysis Techniques (4 papers). Ragni Piene is often cited by papers focused on Algebraic Geometry and Number Theory (11 papers), Advanced Algebra and Geometry (4 papers) and Advanced Numerical Analysis Techniques (4 papers). Ragni Piene collaborates with scholars based in Norway, France and United States. Ragni Piene's co-authors include Michael Schlessinger, Steven L. Kleiman, Bernard Mourrain, Mohamed Elkadi, Olav Arnfinn Laudal, Alicia Dickenstein, Heng‐Ming Tai, Sandra Di Rocco, William Fulton and Antonio Lanteri and has published in prestigious journals such as Advances in Mathematics, American Journal of Mathematics and Mathematische Annalen.

In The Last Decade

Ragni Piene

24 papers receiving 220 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ragni Piene Norway	9	203	122	84	65	56	25	268
Kristian Ranestad Norway	9	145 0.7×	109 0.9×	57 0.7×	73 1.1×	21 0.4×	33	259
Sandra Di Rocco Sweden	9	129 0.6×	85 0.7×	53 0.6×	48 0.7×	25 0.4×	28	184
Viatcheslav Kharlamov France	12	279 1.4×	99 0.8×	46 0.5×	134 2.1×	17 0.3×	31	318
Ziv Ran United States	14	477 2.3×	232 1.9×	137 1.6×	230 3.5×	36 0.6×	80	589
Barry H. Dayton United States	7	59 0.3×	175 1.4×	77 0.9×	28 0.4×	79 1.4×	13	242
Alan H. Durfee United States	11	312 1.5×	63 0.5×	53 0.6×	182 2.8×	15 0.3×	20	368
Vassil Kanev Bulgaria	7	273 1.3×	164 1.3×	180 2.1×	62 1.0×	20 0.4×	17	393
Marc Coppens Belgium	12	404 2.0×	144 1.2×	119 1.4×	155 2.4×	34 0.6×	61	434
M. Marshall Canada	11	96 0.5×	163 1.3×	82 1.0×	51 0.8×	26 0.5×	21	273
F. L. Zak Russia	7	191 0.9×	85 0.7×	58 0.7×	86 1.3×	13 0.2×	12	257

Countries citing papers authored by Ragni Piene

Since Specialization

Citations

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

Fields of papers citing papers by Ragni Piene

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ragni Piene

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

1.

Piene, Ragni, et al.. (2025). Adjoints and canonical forms of polypols. Documenta Mathematica. 30(2). 275–346. 1 indexed citations

2.

Holden, Helge & Ragni Piene. (2019). The Abel Prize 2013-2017. CERN Document Server (European Organization for Nuclear Research).

3.

Dickenstein, Alicia & Ragni Piene. (2017). Higher order selfdual toric varieties. Annali di Matematica Pura ed Applicata (1923 -). 196(5). 1759–1777. 1 indexed citations

4.

Lanteri, Antonio, et al.. (2015). Inflectional loci of quadric fibrations. Journal of Algebra. 441. 363–397. 3 indexed citations

5.

Holden, Helge & Ragni Piene. (2013). The Abel Prize 2008-2012. CERN Document Server (European Organization for Nuclear Research). 2 indexed citations

6.

Dickenstein, Alicia, Sandra Di Rocco, & Ragni Piene. (2009). Classifying smooth lattice polytopes via toric fibrations. Advances in Mathematics. 222(1). 240–254. 9 indexed citations

7.

Lanteri, Antonio, et al.. (2007). Inflectional loci of scrolls. Mathematische Zeitschrift. 258(3). 557–564. 3 indexed citations

8.

Elkadi, Mohamed, Bernard Mourrain, & Ragni Piene. (2006). Algebraic Geometry and Geometric Modeling (Mathematics and Visualization). Springer eBooks. 1 indexed citations

9.

Laudal, Olav Arnfinn, et al.. (2004). The legacy of Niels Henrik Abel : the Abel Bicentennial, Oslo, 2002. Springer eBooks. 3 indexed citations

10.

Laudal, Olav Arnfinn & Ragni Piene. (2004). The Legacy of Niels Henrik Abel. CERN Document Server (European Organization for Nuclear Research). 7 indexed citations

11.

Kleiman, Steven L. & Ragni Piene. (2004). Node polynomials for families: methods and applications. Mathematische Nachrichten. 271(1). 69–90. 20 indexed citations

12.

Piene, Ragni. (1999). ON THE USE OF PARAMETER AND MODULI SPACES IN CURVE COUNTING. 1 indexed citations

13.

Piene, Ragni, et al.. (1997). Arithmetically cohen-macaulay curves inP 4 of degree 4 and genus 0. manuscripta mathematica. 93(1). 391–408. 9 indexed citations

14.

Piene, Ragni. (1993). Projective algebraic geometry in positive characteristic. Duo Research Archive (University of Oslo). 2 indexed citations

15.

Piene, Ragni, et al.. (1992). A Characterization of Balanced Rational Normal Surface Scrolls in Terms of Their Osculating Spaces II.. MATHEMATICA SCANDINAVICA. 70. 204–204. 6 indexed citations

16.

Piene, Ragni & Michael Schlessinger. (1985). On the Hilbert Scheme Compactification of the Space of Twisted Cubics. American Journal of Mathematics. 107(4). 761–761. 53 indexed citations

17.

Piene, Ragni, et al.. (1981). A geometric approach to the arithmetic genus of a projective manifold of dimension three. Topology. 20(2). 179–190. 4 indexed citations

18.

Piene, Ragni. (1981). Cuspidal projections of space curves. Mathematische Annalen. 256(1). 95–119. 15 indexed citations

19.

Piene, Ragni. (1979). A proof of Noether's formula for the arithmetic genus of an algebraic surface. Compositio Mathematica. 38(1). 113–119. 4 indexed citations

20.

Piene, Ragni. (1978). Polar classes of singular varieties. Annales Scientifiques de l École Normale Supérieure. 11(2). 247–276. 62 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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