Wolfhard Hansen

1.5k total citations
78 papers, 765 citations indexed

About

Wolfhard Hansen is a scholar working on Applied Mathematics, Mathematical Physics and Computational Theory and Mathematics. According to data from OpenAlex, Wolfhard Hansen has authored 78 papers receiving a total of 765 indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Applied Mathematics, 36 papers in Mathematical Physics and 33 papers in Computational Theory and Mathematics. Recurrent topics in Wolfhard Hansen's work include Advanced Mathematical Modeling in Engineering (29 papers), Spectral Theory in Mathematical Physics (18 papers) and Numerical methods in inverse problems (16 papers). Wolfhard Hansen is often cited by papers focused on Advanced Mathematical Modeling in Engineering (29 papers), Spectral Theory in Mathematical Physics (18 papers) and Numerical methods in inverse problems (16 papers). Wolfhard Hansen collaborates with scholars based in Germany, Czechia and Tunisia. Wolfhard Hansen's co-authors include Jürgen Bliedtner, Nikolaï Nadirashvili, Ivan Netuka, Alexander Grigorʼyan, Zhi-Ming Ma, Tomasz Jakubowski, Krzysztof Bogdan, Masatoshi Fukushima, Victor Klee and Stephen J. Gardiner and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Inventiones mathematicae and American Mathematical Monthly.

In The Last Decade

Wolfhard Hansen

67 papers receiving 677 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Wolfhard Hansen Germany	13	491	386	345	149	61	78	765
M. A. Akcoglu Canada	14	247 0.5×	374 1.0×	141 0.4×	98 0.7×	48 0.8×	58	589
M. V. Safonov United States	11	572 1.2×	267 0.7×	421 1.2×	68 0.5×	52 0.9×	24	690
D. H. Armitage United Kingdom	11	518 1.1×	218 0.6×	193 0.6×	202 1.4×	9 0.1×	71	627
Juan Horváth United States	3	214 0.4×	315 0.8×	94 0.3×	143 1.0×	25 0.4×	3	499
Jürgen Voigt Germany	14	301 0.6×	373 1.0×	187 0.5×	36 0.2×	34 0.6×	51	561
Marcel Brelot France	10	377 0.8×	247 0.6×	195 0.6×	165 1.1×	15 0.2×	29	593
Aurel Cornea Germany	8	304 0.6×	248 0.6×	179 0.5×	153 1.0×	10 0.2×	19	522
Jürgen Bliedtner Germany	7	213 0.4×	183 0.5×	138 0.4×	76 0.5×	28 0.5×	14	346
Tom Ter Elst New Zealand	14	402 0.8×	403 1.0×	334 1.0×	29 0.2×	10 0.2×	83	601
Nicoletta Tchou France	12	183 0.4×	125 0.3×	204 0.6×	32 0.2×	70 1.1×	51	359

Countries citing papers authored by Wolfhard Hansen

Since Specialization

Citations

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

Fields of papers citing papers by Wolfhard Hansen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Wolfhard Hansen

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

Hansen, Wolfhard & Ivan Netuka. (2013). Champagne subdomains with unavoidable bubbles. Advances in Mathematics. 244. 106–116. 2 indexed citations

Hansen, Wolfhard & Ivan Netuka. (2012). On the existence of Evans potentials. Mathematische Annalen. 356(4). 1283–1302.

Hansen, Wolfhard & Ivan Netuka. (2010). Harmonic measures for a point may form a square. Advances in Mathematics. 225(4). 1830–1839.

Hansen, Wolfhard & Ivan Netuka. (2008). Convexity properties of harmonic measures. Advances in Mathematics. 218(4). 1181–1223. 6 indexed citations

Hansen, Wolfhard. (2008). A Strong Version of Liouville's Theorem. American Mathematical Monthly. 115(7). 583–595. 3 indexed citations

Gardiner, Stephen J. & Wolfhard Hansen. (2007). The Riesz decomposition of finely superharmonic functions. Advances in Mathematics. 214(1). 417–436. 5 indexed citations

Hansen, Wolfhard. (2005). Simple counterexamples to the 3G-inequality. Expositiones Mathematicae. 24(1). 97–102. 5 indexed citations

Hansen, Wolfhard. (2005). Uniform boundary Harnack principle and generalized triangle property. Journal of Functional Analysis. 226(2). 452–484. 38 indexed citations

Hansen, Wolfhard & Ivan Netuka. (2003). Harmonic approximation and Sarason's-type theorem. Journal of Approximation Theory. 120(1). 183–190. 1 indexed citations

10.

Hansen, Wolfhard. (1999). Harnack inequalities for Schrödinger operators. French digital mathematics library (Numdam). 28(3). 413–470. 17 indexed citations

11.

Hansen, Wolfhard. (1998). Liouville's theorem and the restricted mean value property in the plane. Journal de Mathématiques Pures et Appliquées. 77(9). 943–947. 4 indexed citations

12.

Hansen, Wolfhard & Ivan Netuka. (1995). Volume densities with the mean value property for harmonic functions. Proceedings of the American Mathematical Society. 123(1). 135–140. 6 indexed citations

13.

Hansen, Wolfhard, et al.. (1995). LIOUVILLES THEOREM AND THE RESTRICTED MEAN-VALUE PROPERTY. PUB – Publications at Bielefeld University (Bielefeld University). 3 indexed citations

14.

Hansen, Wolfhard & Nikolaï Nadirashvili. (1995). On Veech's conjecture for harmonic functions. French digital mathematics library (Numdam). 22(1). 137–153. 1 indexed citations

15.

Albeverio, Sergio, Masatoshi Fukushima, Wolfhard Hansen, Zhi-Ming Ma, & Michael Röckner. (1992). An invariance result for capacities on Wiener space. Journal of Functional Analysis. 106(1). 35–49. 12 indexed citations

16.

Fukushima, Masatoshi, et al.. (1991). CAPACITIES ON WIENER SPACE - TIGHTNESS AND INVARIANCE. PUB – Publications at Bielefeld University (Bielefeld University). 3 indexed citations

17.

Hansen, Wolfhard, et al.. (1988). Eigenvalues in potential theory. Journal of Differential Equations. 73(1). 133–152. 16 indexed citations

18.

Bliedtner, Jürgen & Wolfhard Hansen. (1986). Potential theory : an analytic and probabilistic approach to balayage. CERN Document Server (European Organization for Nuclear Research). 117 indexed citations

19.

Hansen, Wolfhard. (1973). Perturbation of harmonic spaces and construction of semigroups. Inventiones mathematicae. 19(2). 149–164. 10 indexed citations

20.

Hansen, Wolfhard & Victor Klee. (1969). Intersection theorems for positive sets. Proceedings of the American Mathematical Society. 22(2). 450–457. 5 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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