R. Hettich

1.9k total citations · 1 hit paper
23 papers, 1.1k citations indexed

About

R. Hettich is a scholar working on Computational Theory and Mathematics, Numerical Analysis and Control and Systems Engineering. According to data from OpenAlex, R. Hettich has authored 23 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Computational Theory and Mathematics, 15 papers in Numerical Analysis and 4 papers in Control and Systems Engineering. Recurrent topics in R. Hettich's work include Advanced Optimization Algorithms Research (14 papers), Optimization and Variational Analysis (10 papers) and Matrix Theory and Algorithms (4 papers). R. Hettich is often cited by papers focused on Advanced Optimization Algorithms Research (14 papers), Optimization and Variational Analysis (10 papers) and Matrix Theory and Algorithms (4 papers). R. Hettich collaborates with scholars based in Germany, Netherlands and Austria. R. Hettich's co-authors include K. O. Kortanek, Georg Still, E. W. Sachs, Mario Ries, R. Tichatschke, Hubertus Th. Jongen, Kurt Georg and Peter Gritzmann and has published in prestigious journals such as SIAM Journal on Numerical Analysis, Mathematical Programming and SIAM Review.

In The Last Decade

R. Hettich

20 papers receiving 1.0k citations

Hit Papers

Semi-Infinite Programming: Theory, Methods, and Applications 1993 2026 2004 2015 1993 200 400 600
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Semi-Infinite Programming: Theory, Methods, and Applications
    1993 714 citations R. Hettich, K. O. Kortanek SIAM Review profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
R. Hettich Germany 11 702 646 361 175 171 23 1.1k
V. F. Demyanov Russia 17 936 1.3× 707 1.1× 259 0.7× 79 0.5× 172 1.0× 69 1.4k
N. Z. Shor Ukraine 16 667 1.0× 641 1.0× 237 0.7× 92 0.5× 265 1.5× 47 1.6k
Kurt M. Anstreicher United States 21 960 1.4× 1.0k 1.6× 276 0.8× 109 0.6× 276 1.6× 64 1.8k
G. Alefeld Germany 19 796 1.1× 438 0.7× 238 0.7× 64 0.4× 120 0.7× 83 1.3k
Robert G. Bland United States 10 506 0.7× 254 0.4× 206 0.6× 69 0.4× 81 0.5× 22 1.1k
Yu. E. Nesterov Belgium 8 707 1.0× 762 1.2× 146 0.4× 45 0.3× 299 1.7× 12 1.0k
Jein-Shan Chen Taiwan 22 1.1k 1.5× 1.2k 1.8× 265 0.7× 59 0.3× 158 0.9× 129 1.5k
Robert Mifflin United States 14 888 1.3× 914 1.4× 133 0.4× 43 0.2× 365 2.1× 28 1.2k
Santosh N. Kabadi Canada 10 427 0.6× 296 0.5× 142 0.4× 61 0.3× 97 0.6× 20 851
Shinji Mizuno Japan 19 1.3k 1.9× 1.5k 2.3× 283 0.8× 55 0.3× 238 1.4× 53 1.7k

Countries citing papers authored by R. Hettich

Since Specialization
Citations

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

Fields of papers citing papers by R. Hettich

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of R. Hettich

This figure shows the co-authorship network connecting the top 25 collaborators of R. Hettich. A scholar is included among the top collaborators of R. Hettich 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 R. Hettich. R. Hettich 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.
Hettich, R.. (1995). Some recent results in parametric semi-infinite programming. Optimization. 32(4). 359–372. 3 indexed citations
2.
Hettich, R., et al.. (1995). Local Convergence of SQP Methods in Semi-Infinite Programming. SIAM Journal on Optimization. 5(3). 641–658. 22 indexed citations
3.
Hettich, R. & Georg Still. (1995). Second order optimality conditions for generalized semi-infinite programming problems. Optimization. 34(3). 195–211. 60 indexed citations
4.
Hettich, R. & K. O. Kortanek. (1993). Semi-Infinite Programming: Theory, Methods, and Applications. SIAM Review. 35(3). 380–429. 714 indexed citations breakdown →
5.
Hettich, R. & Georg Still. (1991). Semi-infinite programming models in robotics. University of Twente Research Information. 112–118. 16 indexed citations
6.
Hettich, R., et al.. (1990). An Algorithm for General Restricted Rational Chebyshev Approximation. SIAM Journal on Numerical Analysis. 27(4). 1024–1033. 11 indexed citations
7.
Hettich, R., et al.. (1990). A note on an implementation of a method for quadratic semi-infinite programming. Mathematical Programming. 46(1-3). 249–254. 19 indexed citations
8.
Tichatschke, R., R. Hettich, & Georg Still. (1989). Connections between generalized, inexact and semi-infinite linear programming. Mathematical Methods of Operations Research. 33(6). 367–382. 7 indexed citations
9.
Hettich, R., et al.. (1989). Directional derivatives for the value-function in semi-infinite programming. Mathematical Programming. 44(1-3). 121–121. 9 indexed citations
10.
Hettich, R., et al.. (1988). Some experiments with Karmarkar's algorithm for linear programming. Optimization. 19(5). 653–664.
11.
Hettich, R., et al.. (1987). Accurate Numerical Approximations of Eigenfrequencies and Eigenfunctions of Elliptic Membranes. ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik. 67(12). 589–597. 15 indexed citations
12.
Hettich, R., et al.. (1987). Directional derivatives for the value-function in semi-infinite programming. Mathematical Programming. 38(3). 323–340. 15 indexed citations
13.
Georg, Kurt & R. Hettich. (1987). On the Numerical Stability of Simplex-Algorithms. Optimization. 18(3). 361–372. 1 indexed citations
14.
Hettich, R.. (1986). An implementation of a discretization method for semi-infinite programming. Mathematical Programming. 34(3). 354–361. 63 indexed citations
15.
Hettich, R.. (1983). A Review of Numerical Methods for Semi-Infinite Optimization. Lecture notes in economics and mathematical systems. 158–178. 34 indexed citations
16.
Hettich, R. & Hubertus Th. Jongen. (1981). On the local continuity of the Chebyshev operator. Journal of Approximation Theory. 33(4). 296–307. 2 indexed citations
17.
18.
Hettich, R., et al.. (1977). Approximation with a Class of Rational Functions.. IFIP Congress. 487–492.
19.
Hettich, R.. (1975). Kriterien erster und zweiter Ordnung f�r lokal beste Approximationen bei Problemen mit Nebenbedingungen. Numerische Mathematik. 25(1). 109–122. 3 indexed citations
20.
Hettich, R.. (1974). Kriterien zweiter Ordnung f�r lokal beste Approximationen. Numerische Mathematik. 22(5). 409–417. 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.

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