Khalfa Douak

486 total citations
12 papers, 373 citations indexed

About

Khalfa Douak is a scholar working on Applied Mathematics, Numerical Analysis and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Khalfa Douak has authored 12 papers receiving a total of 373 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Applied Mathematics, 6 papers in Numerical Analysis and 4 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Khalfa Douak's work include Mathematical functions and polynomials (11 papers), Iterative Methods for Nonlinear Equations (4 papers) and Quantum Mechanics and Non-Hermitian Physics (4 papers). Khalfa Douak is often cited by papers focused on Mathematical functions and polynomials (11 papers), Iterative Methods for Nonlinear Equations (4 papers) and Quantum Mechanics and Non-Hermitian Physics (4 papers). Khalfa Douak collaborates with scholars based in France and Tunisia. Khalfa Douak's co-authors include P. Maroni and Youssèf Ben Cheikh and has published in prestigious journals such as Journal of Computational and Applied Mathematics, Applied Numerical Mathematics and Journal of Approximation Theory.

In The Last Decade

Khalfa Douak

12 papers receiving 344 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Khalfa Douak France	9	351	145	137	107	103	12	373
Youssèf Ben Cheikh Tunisia	9	277 0.8×	97 0.7×	100 0.7×	51 0.5×	106 1.0×	20	311
Kerstin Jordaan South Africa	10	265 0.8×	68 0.5×	78 0.6×	63 0.6×	63 0.6×	36	301
Amílcar Branquinho Portugal	11	452 1.3×	222 1.5×	195 1.4×	166 1.6×	74 0.7×	58	556
Kathy Driver South Africa	11	239 0.7×	49 0.3×	47 0.3×	66 0.6×	70 0.7×	32	293
U. Fidalgo Prieto Spain	10	233 0.7×	83 0.6×	37 0.3×	76 0.7×	47 0.5×	16	283
Galina Filipuk Poland	9	156 0.4×	205 1.4×	46 0.3×	45 0.4×	75 0.7×	70	315
M. Vanlessen Belgium	6	254 0.7×	84 0.6×	47 0.3×	64 0.6×	64 0.6×	7	397
Bayram Çekım Türkiye	11	235 0.7×	111 0.8×	19 0.1×	126 1.2×	50 0.5×	58	355
Daniel S. Moak United States	7	210 0.6×	60 0.4×	40 0.3×	30 0.3×	97 0.9×	16	279
Виктор Иванович Буслаев Russia	17	663 1.9×	49 0.3×	66 0.5×	115 1.1×	104 1.0×	68	721

Countries citing papers authored by Khalfa Douak

Since Specialization

Citations

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

Fields of papers citing papers by Khalfa Douak

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Khalfa Douak

This figure shows the co-authorship network connecting the top 25 collaborators of Khalfa Douak. A scholar is included among the top collaborators of Khalfa Douak 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 Khalfa Douak. Khalfa Douak is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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12 of 12 papers shown

Douak, Khalfa. (2024). On the $$D_{\omega }$$-Classical Orthogonal Polynomials. Mediterranean Journal of Mathematics. 21(3). 1 indexed citations

Douak, Khalfa. (2024). The symmetric Dunkl-classical orthogonal polynomials revisited. Integral Transforms and Special Functions. 36(2). 102–120. 1 indexed citations

Douak, Khalfa & P. Maroni. (2020). On a new class of 2-orthogonal polynomials, I: the recurrence relations and some properties. Integral Transforms and Special Functions. 32(2). 134–153. 4 indexed citations

Douak, Khalfa, et al.. (2001). On the classical {$d$}-orthogonal polynomials defined by certain generating functions. II. Bulletin of the Belgian Mathematical Society - Simon Stevin. 8(4). 38 indexed citations

Cheikh, Youssèf Ben & Khalfa Douak. (2000). A generalized hypergeometric d -orthogonal polynomial set. Comptes Rendus de l Académie des Sciences - Series I - Mathematics. 331(5). 349–354. 23 indexed citations

Cheikh, Youssèf Ben & Khalfa Douak. (2000). On the classical {$d$}-orthogonal polynomials defined by certain generating functions. I. Bulletin of the Belgian Mathematical Society - Simon Stevin. 7(1). 30 indexed citations

Douak, Khalfa. (1999). On 2‐orthogonal polynomials of Laguerre type. International Journal of Mathematics and Mathematical Sciences. 22(1). 29–48. 29 indexed citations

Douak, Khalfa & P. Maroni. (1997). On $d$-orthogonal Tchebychev polynomials, II. Methods and Applications of Analysis. 4(4). 404–429. 24 indexed citations

Douak, Khalfa & P. Maroni. (1997). On d-orthogonal Tchebychev polynomials, I. Applied Numerical Mathematics. 24(1). 23–53. 45 indexed citations

10.

Douak, Khalfa. (1996). The relation of the d-orthogonal polynomials to the Appell polynomials. Journal of Computational and Applied Mathematics. 70(2). 279–295. 82 indexed citations

11.

Douak, Khalfa & P. Maroni. (1995). A Characterization of "Classical" d-Orthogonal Polynomials. Journal of Approximation Theory. 82(2). 177–204. 36 indexed citations

12.

Douak, Khalfa & P. Maroni. (1992). LES POLYNÔMES ORTHOGONAUX „CLASSIQUES“ DE DIMENSION DEUX. Analysis. 12(1-2). 71–108. 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.

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