Walter Alt

478 total citations
20 papers, 306 citations indexed

About

Walter Alt is a scholar working on Computational Theory and Mathematics, Numerical Analysis and Computational Mechanics. According to data from OpenAlex, Walter Alt has authored 20 papers receiving a total of 306 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Computational Theory and Mathematics, 10 papers in Numerical Analysis and 9 papers in Computational Mechanics. Recurrent topics in Walter Alt's work include Optimization and Variational Analysis (8 papers), Advanced Numerical Methods in Computational Mathematics (8 papers) and Advanced Optimization Algorithms Research (6 papers). Walter Alt is often cited by papers focused on Optimization and Variational Analysis (8 papers), Advanced Numerical Methods in Computational Mathematics (8 papers) and Advanced Optimization Algorithms Research (6 papers). Walter Alt collaborates with scholars based in Germany, Austria and Australia. Walter Alt's co-authors include Uwe Mackenroth, Matthias Gerdts, Robert Baier, Frank Lempio, Christopher Schneider, Arnd Rösch, Roland Griesse and C. Yalçın Kaya and has published in prestigious journals such as SHILAP Revista de lepidopterología, Applied Mathematics and Computation and SIAM Journal on Control and Optimization.

In The Last Decade

Walter Alt

19 papers receiving 251 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Walter Alt Germany	10	188	140	129	67	52	20	306
Nadir Arada Portugal	10	298 1.6×	295 2.1×	103 0.8×	96 1.4×	34 0.7×	27	417
Ira Neitzel Germany	9	162 0.9×	191 1.4×	86 0.7×	42 0.6×	41 0.8×	27	257
Rong Hu China	10	340 1.8×	55 0.4×	121 0.9×	26 0.4×	45 0.9×	53	400
S. I. Lyashko Ukraine	8	91 0.5×	25 0.2×	65 0.5×	41 0.6×	37 0.7×	57	214
Vadím Komkov United States	10	112 0.6×	46 0.3×	91 0.7×	59 0.9×	43 0.8×	44	366
Terry L. Herdman United States	11	104 0.6×	37 0.3×	241 1.9×	211 3.1×	54 1.0×	37	444
Costică Moroşanu Romania	12	148 0.8×	27 0.2×	141 1.1×	40 0.6×	44 0.8×	46	310
Toni Sayah Lebanon	11	154 0.8×	207 1.5×	77 0.6×	16 0.2×	33 0.6×	42	309
Zhaojie Zhou China	13	117 0.6×	206 1.5×	259 2.0×	79 1.2×	19 0.4×	35	488
Uwe Mackenroth Germany	8	109 0.6×	86 0.6×	40 0.3×	85 1.3×	17 0.3×	15	228

Countries citing papers authored by Walter Alt

Since Specialization

Citations

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

Fields of papers citing papers by Walter Alt

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Walter Alt

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

Alt, Walter, et al.. (2017). Euler discretization for a class of nonlinear optimal control problems with control appearing linearly. Computational Optimization and Applications. 69(3). 825–856. 14 indexed citations

Alt, Walter, et al.. (2016). Regularization and implicit Euler discretization of linear-quadratic optimal control problems with bang-bang solutions. Applied Mathematics and Computation. 287-288. 104–124. 16 indexed citations

Alt, Walter, C. Yalçın Kaya, & Christopher Schneider. (2015). Dualization and discretization of linear-quadratic control problems with bang–bang solutions. SHILAP Revista de lepidopterología. 4(1). 47–77. 3 indexed citations

Alt, Walter & Christopher Schneider. (2014). Linear-quadratic control problems withL¹-control cost. Optimal Control Applications and Methods. 36(4). 512–534. 20 indexed citations

Alt, Walter, et al.. (2013). An implicit discretization scheme for linear-quadratic control problems with bang–bang solutions. Optimization methods & software. 29(3). 535–560. 15 indexed citations

Alt, Walter, Robert Baier, Matthias Gerdts, & Frank Lempio. (2012). Error bounds for Euler approximation of linear-quadratic control problems with bang-bang solutions. Numerical Algebra Control and Optimization. 2(3). 547–570. 38 indexed citations

Alt, Walter, Robert Baier, Frank Lempio, & Matthias Gerdts. (2011). Approximations of linear control problems with bang-bang solutions. Optimization. 62(1). 9–32. 29 indexed citations

Alt, Walter. (2011). Nichtlineare Optimierung. Vieweg+Teubner eBooks. 1 indexed citations

Alt, Walter, et al.. (2009). Lipschitz stability for elliptic optimal control problems with mixed control-state constraints. Optimization. 59(6). 833–849. 17 indexed citations

10.

Alt, Walter, et al.. (2008). Discretization of elliptic control problems with time dependent parameters. Applied Numerical Mathematics. 59(3-4). 410–423.

11.

Alt, Walter, et al.. (2007). Error estimates for finite element approximations of elliptic control problems. 27(1). 7–7. 5 indexed citations

12.

Alt, Walter, et al.. (2007). Finite-difference discretizations of quadratic control problems governed by ordinary elliptic differential equations. Computational Optimization and Applications. 43(1). 133–150. 3 indexed citations

13.

Alt, Walter. (2004). Numerische Verfahren der konvexen, nichtglatten Optimierung. 4 indexed citations

14.

Alt, Walter. (2003). Approximation of optimal control problems with bound constraints by control parameterization. Control and Cybernetics. 32(3). 451–472. 5 indexed citations

15.

Alt, Walter. (2002). Nichtlineare Optimierung. 10 indexed citations

16.

Alt, Walter. (2001). Mesh-Independence of the Lagrange–Newton Method for Nonlinear Optimal Control Problems and their Discretizations. Annals of Operations Research. 101(1-4). 101–117. 8 indexed citations

17.

Alt, Walter, et al.. (1993). An implicit-function theorem for a class of monotone generalized equations. Kybernetika. 29(3). 210–221. 8 indexed citations

18.

Alt, Walter. (1991). Stability of Solutions and the Lagrange-Newton Method for Nonlinear Optimization and Optimal Control Problems. ERef Bayreuth (University of Bayreuth). 5 indexed citations

19.

Alt, Walter. (1990). The lagrange-newton method for infinite-dimensional optimization problems. Numerical Functional Analysis and Optimization. 11(3-4). 201–224. 45 indexed citations

20.

Alt, Walter & Uwe Mackenroth. (1989). Convergence of Finite Element Approximations to State Constrained Convex Parabolic Boundary Control Problems. SIAM Journal on Control and Optimization. 27(4). 718–736. 60 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