Janne Heittokangas
University Lecturer
Department of Physics and Mathematics, Faculty of Science, Forestry and Technology
[email protected] | +358 50 442 2381
Research groups
Publications
35/35 items-
Convergence of sub-series' and sub-signed series' in terms of the asymptotic ψ-density
Heittokangas, Janne; Latreuch, Zinelaabidine, 2025, Bulletin des sciences mathematiques, 204, 103683. A1 Journal article (refereed), original research -
Standard solutions of complex linear differential equations
Heittokangas, Janne; Pulkkinen, Samu; Yu, Hui; Zemirni, Mohamed Amine, 2024, Annales Fennici mathematici, 49, 2, 663-683. A1 Journal article (refereed), original research -
A Continuous Transition from E-Sets to R-sets and Beyond
Ding, Jie; Heittokangas, Janne; Wen, Zhi-Tao, 2023, Journal of geometric analysis, 33, 9, 278. A1 Journal article (refereed), original research -
Description of growth and oscillation of solutions of complex LDE’s
Chyzhykov, Igor; Gröhn, Janne; Heittokangas, Janne; Rättyä, Jouni, 2022, Journal of the australian mathematical society, [Published online 16 June 2022], 1-27. A1 Journal article (refereed), original research -
Irregular finite order solutions of complex LDE's in unit disc
Chyzhykov, Igor; Filevych, Petro; Gröhn, Janne; Heittokangas, Janne; Rättyä, Jouni, 2022, Journal de mathematiques pures et appliquees, 160, 158-201. A1 Journal article (refereed), original research -
Opiskelun joustavuuden lisääminen matematiikan yliopisto-opintojen taitekohdassa
Eronen Lasse; Heittokangas Janne, 2022, FMSERA Journal, 5, 1, 61-75. A1 Journal article (refereed), original research -
Value distribution of exponential polynomials and their role in the theories of complex differential equations and oscillation theory
Heittokangas, Janne; Ishizaki, Katsuya; Tohge, Kazuya; Wen, Zhi‐Tao, 2022, Bulletin of the london mathematical society, 55, 1, 1-77. A2 Review article, Literature review, Systematic review -
Contour integral solutions of linear differential equations which include a generalization of the Airy integral
Gundersen, Gary G; Heittokangas, Janne M; Wen, Zhi-Tao, 2021, Houston journal of mathematics, 47, 2, 321–351. A1 Journal article (refereed), original research -
On the relationship between the lower order of coefficients and the growth of solutions of differential equations
Long Jianren, Heittokangas Janne, Ye Zhuan, 2016, Journal of mathematical analysis and applications, 444, 1, 153-166. A1 Journal article (refereed), original research -
Completely regular growth solutions of second order complex linear differential equations
Heittokangas Janne, Laine Ilpo, Tohge Kazuya, Wen Zhi-Tao, 2015, Annales academiae scientiarum fennicae-mathematica, 40, 985-1003. A1 Journal article (refereed), original research