
JANNE HEITTOKANGAS
University Lecturer
Contact info
Organization
Faculty of Science and Forestry, Department of Physics and Mathematics
janne.heittokangas@uef.fi
Phone
+358 50 442 2381
Research groups - UEF
Publications
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Chyzhykov, I.; Gröhn, J.; Heittokangas, J.; Rättyä, J.. 2022. Oscillation of Solutions of LDE¿s in Domains Conformally Equivalent to Unit Disc Journal of geometric analysis 32 3: 71. 2022
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Yu, Hui; Heittokangas, Janne; Wang, Jun; Wen, Zhi Tao. 2022. Meromorphic Functions of Finite φ-order and Linear Askey-Wilson Divided Difference Equations Acta mathematica sinica : english series 38: 371-383. 2022
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Gundersen, Gary G.; Heittokangas, Janne; Zemirni, Mohamed Amine. 2022. Asymptotic integration theory for f''+ P(z)f=0 Expositiones mathematicae 40 1: 94-126. 2022
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Heittokangas, J; Latreuch, Z; Wang, J; Zemirni, M A. 2021. On meromorphic solutions of non-linear differential equations of Tumura - Clunie type Mathematische nachrichten 294 4: 748-773. 2021
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Heittokangas, J; Wang, J; Wen, ZT; Yu, H. 2021. Meromorphic functions of finite φ-order and linear q-difference equations Journal of difference equations and applications 27 9: 1280-1309. 2021
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Heittokangas, J; Wen, ZT. 2021. The asymptotic number of zeros of exponential sums in critical strips Monatshefte fur mathematik 194 2: 261-273. 2021
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Heittokangas, Janne; Zemirni, Mohamed Amine. 2021. On Petrenko's deviations and second order differential equations Kodai mathematical journal 44 1: 181-193. 2021
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Heittokangas, Janne; Ishizaki, Katsuya; Tohge, Kazuya; Wen, Zhi-Tao. 2021. Dual exponential polynomials and a problem of Ozawa Proceedings of the Royal Society of Edinburgh section A: mathematics [Epub ahead of print 16 June 2021]: 1-19. 2021
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Heittokangas, Janne; Latreuch, Zinelaabidine; Wang, Jun; Zemirni, Amine. 2021. On the limits of real-valued functions in sets involving Ψ-density, and applications Journal of mathematical analysis and applications 507 1: 125787. 2021
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Heittokangas, Janne; Wen, Zhi-Tao. 2020. Generalization of Pólya's Zero Distribution Theory for Exponential Polynomials, and Sharp Results for Asymptotic Growth Computational methods and function theory 2021; 21 2: 245-270. 2020