E.K. Ifantis

530 total citations
46 papers, 427 citations indexed

About

E.K. Ifantis is a scholar working on Applied Mathematics, Mathematical Physics and Numerical Analysis. According to data from OpenAlex, E.K. Ifantis has authored 46 papers receiving a total of 427 indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Applied Mathematics, 17 papers in Mathematical Physics and 12 papers in Numerical Analysis. Recurrent topics in E.K. Ifantis's work include Mathematical functions and polynomials (23 papers), Differential Equations and Boundary Problems (18 papers) and Spectral Theory in Mathematical Physics (14 papers). E.K. Ifantis is often cited by papers focused on Mathematical functions and polynomials (23 papers), Differential Equations and Boundary Problems (18 papers) and Spectral Theory in Mathematical Physics (14 papers). E.K. Ifantis collaborates with scholars based in Greece. E.K. Ifantis's co-authors include A. Jannussis and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Applied Mathematics and Computation and Journal of Differential Equations.

In The Last Decade

E.K. Ifantis

45 papers receiving 381 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
E.K. Ifantis Greece	11	287	108	93	74	67	46	427
P. J. Bushell United Kingdom	11	221 0.8×	71 0.7×	90 1.0×	84 1.1×	90 1.3×	21	393
Attila Máté United States	15	490 1.7×	131 1.2×	172 1.8×	94 1.3×	153 2.3×	31	581
Andrea Laforgia Italy	16	616 2.1×	82 0.8×	141 1.5×	174 2.4×	75 1.1×	67	730
Martin E. Muldoon Canada	15	646 2.3×	95 0.9×	151 1.6×	142 1.9×	138 2.1×	64	751
A A Gončar	13	457 1.6×	88 0.8×	214 2.3×	127 1.7×	117 1.7×	15	575
Evelyn Frank United States	6	135 0.5×	76 0.7×	63 0.7×	65 0.9×	65 1.0×	27	346
Lisa Jacobsen Norway	9	148 0.5×	87 0.8×	95 1.0×	57 0.8×	44 0.7×	34	309
John McCabe United Kingdom	10	193 0.7×	31 0.3×	114 1.2×	22 0.3×	64 1.0×	39	334
Reinhard Schäfke France	11	168 0.6×	96 0.9×	163 1.8×	162 2.2×	114 1.7×	48	460
Dimitar K. Dimitrov Brazil	14	410 1.4×	54 0.5×	126 1.4×	111 1.5×	100 1.5×	63	494

Countries citing papers authored by E.K. Ifantis

Since Specialization

Citations

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

Fields of papers citing papers by E.K. Ifantis

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by E.K. Ifantis. 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 E.K. Ifantis. The network helps show where E.K. Ifantis may publish in the future.

Co-authorship network of co-authors of E.K. Ifantis

This figure shows the co-authorship network connecting the top 25 collaborators of E.K. Ifantis. A scholar is included among the top collaborators of E.K. Ifantis 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 E.K. Ifantis. E.K. Ifantis 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

Ifantis, E.K., et al.. (2001). Limit points of eigenvalues of truncated tridiagonal operators. Journal of Computational and Applied Mathematics. 133(1-2). 413–422. 9 indexed citations

Ifantis, E.K., et al.. (1995). An alternative proof of a theorem of Stieltjes and related results. Journal of Computational and Applied Mathematics. 65(1-3). 165–172. 10 indexed citations

Ifantis, E.K., et al.. (1994). On the Zeros of a Class of Polynomials Defined by a Three Term Recurrence Relation. Journal of Mathematical Analysis and Applications. 182(2). 361–370. 9 indexed citations

Ifantis, E.K., et al.. (1993). Location of the Complex Zeros of Bessel Functions and Lommel Polynomials. Zeitschrift für Analysis und ihre Anwendungen. 12(4). 605–612. 1 indexed citations

Ifantis, E.K., et al.. (1993). On the zeros of a class of polynomials including the generalized Bessel polynomials. Journal of Computational and Applied Mathematics. 49(1-3). 103–109. 6 indexed citations

Ifantis, E.K.. (1992). Perron-frobenius-type theorems for tridiagonal operators. Applicable Analysis. 44(3-4). 159–169. 4 indexed citations

Ifantis, E.K., et al.. (1991). On the positive zeros of the second derivative of Bessel functions. Journal of Computational and Applied Mathematics. 34(1). 21–31. 7 indexed citations

Ifantis, E.K., et al.. (1990). Inequalities involving Bessel and modified Bessel functions. Journal of Mathematical Analysis and Applications. 147(1). 214–227. 32 indexed citations

Ifantis, E.K., et al.. (1990). Differential inequalities for the positive zeros of Bessel functions. Journal of Computational and Applied Mathematics. 30(2). 139–143. 9 indexed citations

10.

Ifantis, E.K., et al.. (1990). A result on the imaginary zeros of Jv″(Z). Journal of Approximation Theory. 62(2). 192–196. 3 indexed citations

11.

Ifantis, E.K., et al.. (1988). A Differential Equation for the Positive Zeros of the Function $\alpha J_v(z) + \gamma zJ_v'(z)$. Zeitschrift für Analysis und ihre Anwendungen. 7(2). 185–192. 4 indexed citations

12.

Ifantis, E.K., et al.. (1988). Bounds for the first positive zero of a mixed Bessel function. Journal of Computational and Applied Mathematics. 21(2). 245–249. 5 indexed citations

13.

Ifantis, E.K.. (1988). A theorem concerning differentiability of eigenvectors and eigenvales with some applications. Applicable Analysis. 28(4). 257–283. 14 indexed citations

14.

Ifantis, E.K.. (1987). Analytic solutions for nonlinear differential equations. Journal of Mathematical Analysis and Applications. 124(2). 339–380. 19 indexed citations

15.

Ifantis, E.K., et al.. (1987). Upper bounds for the first zeros of Bessel functions. Journal of Computational and Applied Mathematics. 17(3). 355–358. 4 indexed citations

16.

Ifantis, E.K.. (1987). Global analytic solutions of the radial nonlinear wave equation. Journal of Mathematical Analysis and Applications. 124(2). 381–410. 8 indexed citations

17.

Ifantis, E.K., et al.. (1984). Conditions for solution of a linear first-order differential equation in the Hardy-Lebesgue space and applications. Journal of Mathematical Analysis and Applications. 104(2). 454–466. 16 indexed citations

18.

Ifantis, E.K.. (1978). An existence theory for functional-differential equations and functional-differential systems. Journal of Differential Equations. 29(1). 86–104. 34 indexed citations

19.

Ifantis, E.K.. (1970). Structure of the Point Spectrum of Schrödinger-Type Tridiagonal Operators. Journal of Mathematical Physics. 11(11). 3138–3144. 22 indexed citations

20.

Ifantis, E.K.. (1968). Über das Eigenwertproblem der Funktionalgleichung. ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik. 48(1). 66–68. 6 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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