Karl‐Joachim Wirths

700 total citations
42 papers, 444 citations indexed

About

Karl‐Joachim Wirths is a scholar working on Geometry and Topology, Applied Mathematics and Polymers and Plastics. According to data from OpenAlex, Karl‐Joachim Wirths has authored 42 papers receiving a total of 444 indexed citations (citations by other indexed papers that have themselves been cited), including 34 papers in Geometry and Topology, 32 papers in Applied Mathematics and 10 papers in Polymers and Plastics. Recurrent topics in Karl‐Joachim Wirths's work include Analytic and geometric function theory (32 papers), Holomorphic and Operator Theory (24 papers) and Meromorphic and Entire Functions (15 papers). Karl‐Joachim Wirths is often cited by papers focused on Analytic and geometric function theory (32 papers), Holomorphic and Operator Theory (24 papers) and Meromorphic and Entire Functions (15 papers). Karl‐Joachim Wirths collaborates with scholars based in Germany, India and Russia. Karl‐Joachim Wirths's co-authors include F. G. Avkhadiev, Saminathan Ponnusamy, Milutin Obradović, Christian Pommerenke, Stephan Ruscheweyh, Mario Bonk, I. R. Kayumov and See Keong Lee and has published in prestigious journals such as American Mathematical Monthly, Proceedings of the American Mathematical Society and Mathematische Zeitschrift.

In The Last Decade

Karl‐Joachim Wirths

38 papers receiving 408 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Karl‐Joachim Wirths Germany 12 401 359 81 53 13 42 444
Daniel Breaz Romania 11 437 1.1× 396 1.1× 65 0.8× 23 0.4× 15 1.2× 134 521
Om P. Ahuja United States 11 337 0.8× 257 0.7× 78 1.0× 7 0.1× 27 2.1× 58 371
Maxwell O. Reade United States 10 330 0.8× 251 0.7× 77 1.0× 11 0.2× 7 0.5× 31 360
K.‐J. Wirths Germany 10 249 0.6× 316 0.9× 42 0.5× 67 1.3× 4 0.3× 41 354
A. E. Livingston United States 6 269 0.7× 203 0.6× 64 0.8× 28 0.5× 8 0.6× 14 308
F. R. Keogh United Kingdom 8 458 1.1× 360 1.0× 93 1.1× 31 0.6× 27 2.1× 24 525
Dorothy Browne Shaffer United States 6 382 1.0× 273 0.8× 104 1.3× 8 0.2× 11 0.8× 19 394
Luminiţa-Ioana Cotîrlă Romania 11 336 0.8× 258 0.7× 52 0.6× 8 0.2× 48 3.7× 102 397
R. Parvatham India 7 274 0.7× 213 0.6× 39 0.5× 7 0.1× 10 0.8× 21 286
Serap Bulut Türkiye 13 587 1.5× 366 1.0× 152 1.9× 8 0.2× 61 4.7× 77 616

Countries citing papers authored by Karl‐Joachim Wirths

Since Specialization
Citations

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

Fields of papers citing papers by Karl‐Joachim Wirths

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Karl‐Joachim Wirths. 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 Karl‐Joachim Wirths. The network helps show where Karl‐Joachim Wirths may publish in the future.

Co-authorship network of co-authors of Karl‐Joachim Wirths

This figure shows the co-authorship network connecting the top 25 collaborators of Karl‐Joachim Wirths. A scholar is included among the top collaborators of Karl‐Joachim Wirths 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 Karl‐Joachim Wirths. Karl‐Joachim Wirths 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.
Ponnusamy, Saminathan, et al.. (2023). An Elementary Counterexample to a Coefficient Conjecture. Computational Methods and Function Theory. 24(1). 229–239. 2 indexed citations
2.
Kayumov, I. R. & Karl‐Joachim Wirths. (2020). Inequalities of Carlson Type for $$\alpha $$-Bloch Functions. Mediterranean Journal of Mathematics. 17(3). 1 indexed citations
3.
Obradović, Milutin, Saminathan Ponnusamy, & Karl‐Joachim Wirths. (2017). Logarithmic coefficients and a coefficient conjecture for univalent functions. Monatshefte für Mathematik. 185(3). 489–501. 48 indexed citations
4.
Wirths, Karl‐Joachim, et al.. (2016). Central functions for classes of concave univalent functions. Mathematica Slovaca. 66(1). 141–146.
5.
Obradović, Milutin, Saminathan Ponnusamy, & Karl‐Joachim Wirths. (2015). Geometric Studies on the Class $${\mathcal {U}}(\lambda )$$ U ( λ ). Bulletin of the Malaysian Mathematical Sciences Society. 39(3). 1259–1284. 25 indexed citations
6.
Ponnusamy, Saminathan & Karl‐Joachim Wirths. (2014). On the problem of Gromova and Vasil'ev on integral means, and Yamashita's conjecture for spirallike functions. Annales Academiae Scientiarum Fennicae Mathematica. 39. 721–731. 12 indexed citations
7.
Wirths, Karl‐Joachim, et al.. (2010). THE KOEBE DOMAIN FOR CONCAVE UNIVALENT FUNCTIONS. Bulgarian Digital Mathematics Library (BulDML) at IMI-BAS (Institute of Mathematics and Informatics). 2 indexed citations
8.
Ponnusamy, Saminathan, et al.. (2007). Domains of variability of Laurent coefficients and the convex hull for the family of concave univalent functions. Kodai Mathematical Journal. 30(3). 7 indexed citations
9.
Avkhadiev, F. G., Christian Pommerenke, & Karl‐Joachim Wirths. (2006). Sharp inequalities for the coefficients of concave schlicht functions. Commentarii Mathematici Helvetici. 81(4). 801–807. 24 indexed citations
10.
Avkhadiev, F. G. & Karl‐Joachim Wirths. (2006). Sharp Bounds for Sums of Coefficients of Inverses of Convex Functions. Computational Methods and Function Theory. 7(1). 105–109. 2 indexed citations
11.
Wirths, Karl‐Joachim. (2005). Julia's Lemma and concave schlicht functions. Quaestiones Mathematicae. 28(1). 95–103. 4 indexed citations
12.
Avkhadiev, F. G. & Karl‐Joachim Wirths. (2004). Punishing Factors for Angles. Computational Methods and Function Theory. 3(1). 127–141. 4 indexed citations
13.
Wirths, Karl‐Joachim. (2004). A proof of the Livingston conjecture for the fourth and the fifth coefficient of concave univalent functions. Annales Polonici Mathematici. 83(1). 87–93. 6 indexed citations
14.
Wirths, Karl‐Joachim. (1990). An extremal problem for polynomials with a prescribed value at a given point of the real axis.. MATHEMATICA SCANDINAVICA. 66. 130–130.
15.
Bonk, Mario, et al.. (1987). On the Number of Isolated Maxima of Extreme Bloch Functions. Complex Variables Theory and Application An International Journal. 8(3-4). 213–217. 2 indexed citations
16.
Ruscheweyh, Stephan, et al.. (1986). On a Boundary-Value Problem for Convex Univalent Functions. Journal of the London Mathematical Society. s2-34(3). 426–434. 2 indexed citations
17.
Wirths, Karl‐Joachim. (1982). On Holomorphic Functions Satisfying | f(z) | (1 - | z | 2 ) 1 in the Unit Disc. Proceedings of the American Mathematical Society. 85(1). 19–19. 3 indexed citations
18.
Ruscheweyh, Stephan & Karl‐Joachim Wirths. (1982). On extreme bloch functions with prescribed critical points. Mathematische Zeitschrift. 180(1). 91–105. 12 indexed citations
19.
Wirths, Karl‐Joachim. (1982). On holomorphic functions satisfying 𝑓(𝑧)(1-𝑧²)≤1 in the unit disc. Proceedings of the American Mathematical Society. 85(1). 19–23. 2 indexed citations
20.
Wirths, Karl‐Joachim. (1975). �ber totalmonotone Zahlenfolgen. Archiv der Mathematik. 26(1). 508–517. 9 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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