Alfonso Vignoli

871 total citations
31 papers, 539 citations indexed

About

Alfonso Vignoli is a scholar working on Mathematical Physics, Geometry and Topology and Computational Theory and Mathematics. According to data from OpenAlex, Alfonso Vignoli has authored 31 papers receiving a total of 539 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Mathematical Physics, 16 papers in Geometry and Topology and 12 papers in Computational Theory and Mathematics. Recurrent topics in Alfonso Vignoli's work include Optimization and Variational Analysis (8 papers), Stability and Controllability of Differential Equations (7 papers) and Homotopy and Cohomology in Algebraic Topology (7 papers). Alfonso Vignoli is often cited by papers focused on Optimization and Variational Analysis (8 papers), Stability and Controllability of Differential Equations (7 papers) and Homotopy and Cohomology in Algebraic Topology (7 papers). Alfonso Vignoli collaborates with scholars based in Italy, United States and Germany. Alfonso Vignoli's co-authors include Massimo Furi, Jorge Ize, Jürgen Appell, Espedito De Pascale, Ivar Massabó, Mario Martelli, Martin Väth, Vitaly Moroz, П. П. Забрейко and Jacobo Pejsachowicz and has published in prestigious journals such as Transactions of the American Mathematical Society, Journal of Functional Analysis and Nonlinear Analysis.

In The Last Decade

Alfonso Vignoli

30 papers receiving 446 citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Alfonso Vignoli 247 230 178 174 99 31 539
Czesław Olech 275 1.1× 230 1.0× 103 0.6× 166 1.0× 84 0.8× 40 564
Massimo Furi 391 1.6× 488 2.1× 212 1.2× 307 1.8× 256 2.6× 84 844
Bogdan Choczewski 73 0.3× 270 1.2× 132 0.7× 148 0.9× 83 0.8× 9 465
Martin Väth 172 0.7× 331 1.4× 176 1.0× 161 0.9× 35 0.4× 76 517
Allen Devinatz 278 1.1× 397 1.7× 459 2.6× 64 0.4× 69 0.7× 50 763
Jürgen Appell 292 1.2× 656 2.9× 365 2.1× 206 1.2× 165 1.7× 56 978
B. N. Sadovskii 248 1.0× 626 2.7× 192 1.1× 315 1.8× 133 1.3× 11 824
P. J. Bushell 90 0.4× 221 1.0× 71 0.4× 84 0.5× 90 0.9× 21 393
B. Nagy 110 0.4× 172 0.7× 137 0.8× 38 0.2× 44 0.4× 39 369
Hikosaburo Komatsu 192 0.8× 466 2.0× 432 2.4× 159 0.9× 88 0.9× 30 754

Countries citing papers authored by Alfonso Vignoli

Since Specialization
Citations

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

Fields of papers citing papers by Alfonso Vignoli

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Alfonso Vignoli

This figure shows the co-authorship network connecting the top 25 collaborators of Alfonso Vignoli. A scholar is included among the top collaborators of Alfonso Vignoli 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 Alfonso Vignoli. Alfonso Vignoli 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.
Ize, Jorge & Alfonso Vignoli. (2013). Equivariant nonlinear spectrum. Journal of Fixed Point Theory and Applications. 13(1). 51–62. 1 indexed citations
2.
Matzeu, M. & Alfonso Vignoli. (2011). Topological Nonlinear Analysis II: Degree, Singularity, and Variations. CERN Document Server (European Organization for Nuclear Research). 3 indexed citations
3.
Appell, Jürgen, Espedito De Pascale, & Alfonso Vignoli. (2004). Nonlinear Spectral Theory. Cineca Institutional Research Information System (Tor Vergata University). 89 indexed citations
4.
Furi, Massimo & Alfonso Vignoli. (2002). An Extension of the Notion of Zero-Epi Maps to the Context of Topological Spaces. Zeitschrift für Analysis und ihre Anwendungen. 21(2). 485–493. 1 indexed citations
5.
Appell, Jürgen, Espedito De Pascale, & Alfonso Vignoli. (2001). A Semilinear Furi-Martelli-Vignoli Spectrum. Zeitschrift für Analysis und ihre Anwendungen. 20(3). 565–577. 1 indexed citations
6.
Pascale, Espedito De, et al.. (2000). A comparison of different spectra for nonlinear operators. Nonlinear Analysis. 40(1-8). 73–90. 9 indexed citations
7.
Appell, Jürgen, Martin Väth, & Alfonso Vignoli. (1999). Compactness and Existence Results for Ordinary Differential Equations in Banach Spaces. Zeitschrift für Analysis und ihre Anwendungen. 18(3). 569–584. 5 indexed citations
8.
Moroz, Vitaly, Alfonso Vignoli, & П. П. Забрейко. (1998). On the three critical points theorem. Topological Methods in Nonlinear Analysis. 11(1). 103–103. 10 indexed citations
9.
Ize, Jorge, Ivar Massabó, & Alfonso Vignoli. (1989). Degree theory for equivariant maps. I. Transactions of the American Mathematical Society. 315(2). 433–510. 33 indexed citations
10.
Massabó, Ivar, et al.. (1988). Lipschitz and darbo conditions for the superposition operator in ideal spaces. Annali di Matematica Pura ed Applicata (1923 -). 152(1). 123–137. 5 indexed citations
11.
Ize, Jorge, et al.. (1985). Structure and Dimension of Global Branches of Solutions to Multiparameter Nonlinear Equations. Transactions of the American Mathematical Society. 291(2). 383–383. 9 indexed citations
12.
Martelli, Mario & Alfonso Vignoli. (1983). On the structure of the solution set of nonlinear equations. Nonlinear Analysis. 7(7). 685–693. 3 indexed citations
13.
Furi, Massimo & Alfonso Vignoli. (1982). Unbounded nontrivial branches of eigenfunctions for nonlinear equations. Nonlinear Analysis. 6(11). 1267–1270. 2 indexed citations
14.
Furi, Massimo, et al.. (1980). On the solvability of nonlinear operator equations in normed spaces. Annali di Matematica Pura ed Applicata (1923 -). 124(1). 321–343. 49 indexed citations
15.
Furi, Massimo & Alfonso Vignoli. (1977). Spectrum for nonlinear maps and bifurcation in the non differentiable case. Annali di Matematica Pura ed Applicata (1923 -). 113(1). 265–285. 7 indexed citations
16.
Furi, Massimo & Alfonso Vignoli. (1977). On surjectivity for nonlinear maps in banach spaces. Annali di Matematica Pura ed Applicata (1923 -). 112(1). 205–216. 2 indexed citations
17.
Furi, Massimo & Alfonso Vignoli. (1975). A nonlinear spectral approach to surjectivity in Banach spaces. Journal of Functional Analysis. 20(4). 304–318. 19 indexed citations
18.
Vignoli, Alfonso, et al.. (1974). On differentiability and surjectivity of α-lipschitz mappings. Annali di Matematica Pura ed Applicata (1923 -). 101(1). 49–63. 7 indexed citations
19.
Martelli, Mario & Alfonso Vignoli. (1972). Eigenvectors and surjectivity for α-lipschitz mappings in banach spaces. Annali di Matematica Pura ed Applicata (1923 -). 94(1). 3 indexed citations
20.
Furi, Massimo & Alfonso Vignoli. (1970). About well-posed optimization problems for functionals in metric spaces. Journal of Optimization Theory and Applications. 5(3). 225–229. 90 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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