Wilhelm Niethammer

1.0k total citations
32 papers, 766 citations indexed

About

Wilhelm Niethammer is a scholar working on Computational Theory and Mathematics, Numerical Analysis and Computational Mechanics. According to data from OpenAlex, Wilhelm Niethammer has authored 32 papers receiving a total of 766 indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Computational Theory and Mathematics, 21 papers in Numerical Analysis and 6 papers in Computational Mechanics. Recurrent topics in Wilhelm Niethammer's work include Matrix Theory and Algorithms (26 papers), Advanced Optimization Algorithms Research (15 papers) and Iterative Methods for Nonlinear Equations (11 papers). Wilhelm Niethammer is often cited by papers focused on Matrix Theory and Algorithms (26 papers), Advanced Optimization Algorithms Research (15 papers) and Iterative Methods for Nonlinear Equations (11 papers). Wilhelm Niethammer collaborates with scholars based in Germany, United States and Czechia. Wilhelm Niethammer's co-authors include R. S. Varga, Michael Eiermann, Gerhard Starke, Ivo Marek, Martin Hanke, John de Pillis, P. Wild, Martin H. Gutknecht, Karl Zeller and Walter Schempp and has published in prestigious journals such as SIAM Journal on Numerical Analysis, Numerische Mathematik and Annals of Operations Research.

In The Last Decade

Wilhelm Niethammer

31 papers receiving 671 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Wilhelm Niethammer Germany	15	638	496	158	108	77	32	766
Gregory Ammar United States	15	472 0.7×	167 0.3×	158 1.0×	90 0.8×	179 2.3×	22	668
Niloufer Mackey United States	18	879 1.4×	611 1.2×	234 1.5×	87 0.8×	114 1.5×	26	1.0k
D. Noutsos Greece	11	355 0.6×	184 0.4×	114 0.7×	50 0.5×	58 0.8×	46	481
Plamen Koev United States	15	486 0.8×	275 0.6×	114 0.7×	98 0.9×	97 1.3×	28	769
A. Hadjidimos Greece	19	1.3k 2.1×	1.1k 2.3×	364 2.3×	278 2.6×	59 0.8×	129	1.6k
Hongguo Xu United States	21	639 1.0×	471 0.9×	159 1.0×	97 0.9×	75 1.0×	55	981
Xi-Yan Hu China	18	844 1.3×	578 1.2×	130 0.8×	43 0.4×	215 2.8×	65	934
Evgenij E. Tyrtyshnikov Russia	7	401 0.6×	95 0.2×	149 0.9×	105 1.0×	176 2.3×	7	553
Christian Mehl Germany	19	951 1.5×	616 1.2×	262 1.7×	111 1.0×	97 1.3×	58	1.1k

Countries citing papers authored by Wilhelm Niethammer

Since Specialization

Citations

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

Fields of papers citing papers by Wilhelm Niethammer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Wilhelm Niethammer

This figure shows the co-authorship network connecting the top 25 collaborators of Wilhelm Niethammer. A scholar is included among the top collaborators of Wilhelm Niethammer 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 Wilhelm Niethammer. Wilhelm Niethammer 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

Niethammer, Wilhelm. (1999). A note on the extended convergence of SOR for two-periodic Markov chains. Linear Algebra and its Applications. 287(1-3). 315–322. 2 indexed citations

Hanke, Martin, Marlis Hochbruck, & Wilhelm Niethammer. (1993). Experiments with Krylov subspace methods on a massively parallel computer. Applications of Mathematics. 38(6). 440–451. 4 indexed citations

Starke, Gerhard & Wilhelm Niethammer. (1991). SOR for AX−XB=C. Linear Algebra and its Applications. 154-156. 355–375. 73 indexed citations

Hanke, Martin & Wilhelm Niethammer. (1990). On the acceleration of Kaczmarz's method for inconsistent linear systems. Linear Algebra and its Applications. 130. 83–98. 44 indexed citations

Niethammer, Wilhelm & R. S. Varga. (1989). Relaxation Methods for Non-Hermitian Linear Systems. Results in Mathematics. 16(3-4). 308–320. 9 indexed citations

Eiermann, Michael, Ivo Marek, & Wilhelm Niethammer. (1988). On the solution of singular linear systems of algebraic equations by semiiterative methods. Numerische Mathematik. 53(3). 265–283. 83 indexed citations

Wild, P. & Wilhelm Niethammer. (1987). Over- and underrelaxation for linear systems with weakly cyclic jacobi matrices of index p. Linear Algebra and its Applications. 91. 29–52. 23 indexed citations

Gutknecht, Martin H., Wilhelm Niethammer, & R. S. Varga. (1986). k-Step iterative methods for solving nonlinear systems of equations. Numerische Mathematik. 48(6). 699–712. 14 indexed citations

Eiermann, Michael, Wilhelm Niethammer, & R. S. Varga. (1985). A study of semiiterative methods for nonsymmetric systems of linear equations. Numerische Mathematik. 47(4). 505–533. 78 indexed citations

10.

Varga, R. S., et al.. (1984). p-cyclic matrices and the symmetric successive overrelaxation method. Linear Algebra and its Applications. 58. 425–439. 34 indexed citations

11.

Niethammer, Wilhelm, et al.. (1984). On the acceleration of limit periodic continued fractions. Numerische Mathematik. 44(1). 129–137. 8 indexed citations

12.

Niethammer, Wilhelm, John de Pillis, & R. S. Varga. (1984). Convergence of block iterative methods applied to sparse least-squares problems. Linear Algebra and its Applications. 58. 327–341. 50 indexed citations

13.

Eiermann, Michael & Wilhelm Niethammer. (1983). On the Construction of Semi-Iterative Methods. SIAM Journal on Numerical Analysis. 20(6). 1153–1160. 32 indexed citations

14.

Niethammer, Wilhelm & R. S. Varga. (1983). The analysis ofk-step iterative methods for linear systems from summability theory. Numerische Mathematik. 41(2). 177–206. 71 indexed citations

15.

Niethammer, Wilhelm. (1979). On Different Splittings and the Associated Iteration Methods. SIAM Journal on Numerical Analysis. 16(2). 186–200. 38 indexed citations

16.

Niethammer, Wilhelm, et al.. (1975). On a relaxed SOR-method applied to nonsymmetric linear systems. Journal of Computational and Applied Mathematics. 1(3). 133–136. 3 indexed citations

17.

Niethammer, Wilhelm. (1973). Ein numerisches Verfahren zur analytischen Fortsetzung. Numerische Mathematik. 21(1). 81–92. 2 indexed citations

18.

Niethammer, Wilhelm. (1970). Über- und Unterrelaxation bei linearen Gleichungssystemen. Computing. 5(3). 303–311. 6 indexed citations

19.

Niethammer, Wilhelm & Karl Zeller. (1967). Unendliche Gleichungssysteme mit beliebiger rechter Seite. Mathematische Zeitschrift. 96(1). 1–6. 7 indexed citations

20.

Niethammer, Wilhelm. (1964). Relaxation bei komplexen matrizen. Mathematische Zeitschrift. 86(1). 34–40. 22 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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