Janne Heittokangas
University Lecturer
Department of Physics and Mathematics, Faculty of Science, Forestry and Technology
janne.heittokangas@uef.fi | +358 50 442 2381
Research groups
Publications
59/59 items-
A Continuous Transition from E-Sets to R-sets and Beyond
Ding, Jie; Heittokangas, Janne; Wen, Zhi-Tao. 2023. Journal of geometric analysis. 33: . 278 A1 Journal article (refereed), original research -
Asymptotic integration theory for f''+ P(z)f=0
Gundersen, Gary G.; Heittokangas, Janne; Zemirni, Mohamed Amine. 2022. Expositiones mathematicae. 40: 94-126 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 -
Meromorphic Functions of Finite ϕ-order and Linear Askey—Wilson Divided Difference Equations
Yu, Hui; Heittokangas, Janne; Wang, Jun; Wen, Zhi Tao. 2022. Acta mathematica sinica : english series. 38: 371-383 A1 Journal article (refereed), original research -
Opiskelun joustavuuden lisääminen matematiikan yliopisto-opintojen taitekohdassa
Eronen Lasse; Heittokangas Janne. 2022. FMSERA Journal. 5: 61-75 A1 Journal article (refereed), original research -
Oscillation of Solutions of LDE’s in Domains Conformally Equivalent to Unit Disc
Chyzhykov, I.; Gröhn, J.; Heittokangas, J.; Rättyä, J.. 2022. Journal of geometric analysis. 32: 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. 2023; 55: 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: 321–351 A1 Journal article (refereed), original research -
Dual exponential polynomials and a problem of Ozawa
Heittokangas, Janne; Ishizaki, Katsuya; Tohge, Kazuya; Wen, Zhi-Tao. 2021. Proceedings of the Royal Society of Edinburgh section A: mathematics. 152: 701-719 A1 Journal article (refereed), original research