Demir N. Küpeli

737 total citations
29 papers, 467 citations indexed

About

Demir N. Küpeli is a scholar working on Applied Mathematics, Astronomy and Astrophysics and Mathematical Physics. According to data from OpenAlex, Demir N. Küpeli has authored 29 papers receiving a total of 467 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Applied Mathematics, 22 papers in Astronomy and Astrophysics and 7 papers in Mathematical Physics. Recurrent topics in Demir N. Küpeli's work include Geometric Analysis and Curvature Flows (21 papers), Advanced Differential Geometry Research (20 papers) and Cosmology and Gravitation Theories (5 papers). Demir N. Küpeli is often cited by papers focused on Geometric Analysis and Curvature Flows (21 papers), Advanced Differential Geometry Research (20 papers) and Cosmology and Gravitation Theories (5 papers). Demir N. Küpeli collaborates with scholars based in Türkiye, Spain and United States. Demir N. Küpeli's co-authors include Eduardo García‐Río, Bülent Ünal and Ramón Vázquez‐Lorenzo and has published in prestigious journals such as Lecture notes in mathematics, Journal of Differential Equations and Nonlinear Analysis.

In The Last Decade

Demir N. Küpeli

26 papers receiving 400 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Demir N. Küpeli Türkiye	11	415	332	290	57	40	29	467
正博昆	3	442 1.1×	248 0.7×	385 1.3×	24 0.4×	26 0.7×	4	484
Luis Hervella Spain	7	471 1.1×	287 0.9×	445 1.5×	59 1.0×	50 1.3×	15	536
Bülent Ünal Türkiye	12	324 0.8×	298 0.9×	195 0.7×	79 1.4×	16 0.4×	23	394
F. Tricerri Italy	13	749 1.8×	510 1.5×	635 2.2×	36 0.6×	155 3.9×	25	847
Adara M. Blaga Romania	12	445 1.1×	366 1.1×	316 1.1×	29 0.5×	22 0.6×	83	497
С. Е. Степанов Russia	12	400 1.0×	253 0.8×	318 1.1×	26 0.5×	50 1.3×	88	468
Stere Ianuş Romania	11	574 1.4×	342 1.0×	430 1.5×	26 0.5×	23 0.6×	32	600
Ines Kath Germany	11	377 0.9×	258 0.8×	341 1.2×	130 2.3×	134 3.4×	23	529
Cıhan Özgür Türkiye	17	711 1.7×	502 1.5×	508 1.8×	31 0.5×	17 0.4×	99	761
Kouei Sekigawa Japan	15	604 1.5×	369 1.1×	547 1.9×	31 0.5×	50 1.3×	86	659

Countries citing papers authored by Demir N. Küpeli

Since Specialization

Citations

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

Fields of papers citing papers by Demir N. Küpeli

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Demir N. Küpeli. 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 Demir N. Küpeli. The network helps show where Demir N. Küpeli may publish in the future.

Co-authorship network of co-authors of Demir N. Küpeli

This figure shows the co-authorship network connecting the top 25 collaborators of Demir N. Küpeli. A scholar is included among the top collaborators of Demir N. Küpeli 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 Demir N. Küpeli. Demir N. Küpeli 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

Küpeli, Demir N., et al.. (2006). Some results related to the Laplacian on vector fields. Publicationes Mathematicae Debrecen. 69(1-2). 137–154. 2 indexed citations

García‐Río, Eduardo, Demir N. Küpeli, & Bülent Ünal. (2003). On a differential equation characterizing Euclidean spheres. Journal of Differential Equations. 194(2). 287–299. 28 indexed citations

García‐Río, Eduardo, et al.. (2003). On Level Sets of Lorentzian Distance Function. General Relativity and Gravitation. 35(9). 1597–1615. 11 indexed citations

García‐Río, Eduardo, et al.. (2003). A local analytic characterization of Schwarzschild metrics. Journal of Geometry and Physics. 45(3-4). 309–322. 1 indexed citations

García‐Río, Eduardo, et al.. (2002). A Characterization of Cosmological Time Functions. Annals of Global Analysis and Geometry. 21(1). 1–13. 1 indexed citations

García‐Río, Eduardo, Demir N. Küpeli, & Ramón Vázquez‐Lorenzo. (2002). Osserman Manifolds in Semi-Riemannian Geometry. Lecture notes in mathematics. 49 indexed citations

García‐Río, Eduardo, et al.. (2002). The Local Möbius Equation and Decomposition Theorems in Riemannian Geometry. Canadian Mathematical Bulletin. 45(3). 378–387. 1 indexed citations

García‐Río, Eduardo, et al.. (2001). A curvature condition for a twisted product¶to be a warped product. manuscripta mathematica. 106(2). 213–217. 46 indexed citations

Küpeli, Demir N., et al.. (2000). Some sufficient conditions for a map to be harmonic. Publicationes Mathematicae Debrecen. 57(3-4). 487–498.

10.

García‐Río, Eduardo, et al.. (1999). Affine Osserman connections and their Riemann extensions. Differential Geometry and its Applications. 11(2). 145–153. 30 indexed citations

11.

García‐Río, Eduardo & Demir N. Küpeli. (1999). Semi-Riemannian Maps and Their Applications. CERN Document Server (European Organization for Nuclear Research). 46 indexed citations

12.

Küpeli, Demir N.. (1998). SEMI-RIEMANNIAN TRANSVERSAL MAPS. Demonstratio Mathematica. 31(2). 345–354. 1 indexed citations

13.

García‐Río, Eduardo, et al.. (1997). On a problem of Osserman in Lorentzian geometry. Differential Geometry and its Applications. 7(1). 85–100. 37 indexed citations

14.

Küpeli, Demir N., et al.. (1996). Singularity versus splitting theorems for stably causal spacetimes. Annals of Global Analysis and Geometry. 14(3). 301–312. 14 indexed citations

15.

Küpeli, Demir N.. (1996). On extremal semi-Riemannian submanifolds. Rendiconti del Circolo Matematico di Palermo Series 2. 45(2). 211–232. 1 indexed citations

16.

García‐Río, Eduardo & Demir N. Küpeli. (1994). A local characterization of Schwarzschild and Reissner metrics. General Relativity and Gravitation. 26(12). 1233–1248. 2 indexed citations

17.

Küpeli, Demir N.. (1988). On conjugate and focal points in semi-Riemannian geometry. Mathematische Zeitschrift. 198(4). 569–589. 10 indexed citations

18.

Küpeli, Demir N.. (1988). Null cut loci of spacelike surfaces. General Relativity and Gravitation. 20(5). 415–425. 6 indexed citations

19.

Küpeli, Demir N.. (1987). Degenerate submanifolds in Semi-Riemannian geometry. Geometriae Dedicata. 24(3). 20 indexed citations

20.

Küpeli, Demir N.. (1986). On existence and comparison of conjugate points in Riemannian and Lorentzian geometry. Mathematische Annalen. 276(1). 67–79. 6 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