Items where Author is "Haukkanen, Pentti"

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Haukkanen, Pentti and Tossavainen, Timo (2025) On rational decimal numbers for lower secondary mathematics teachers. Annales Mathematicae et Informaticae, 62. pp. 209-222. ISSN 1787-5021 (Print) 1787-6117 (Online)

Merikoski, Jorma K. and Haukkanen, Pentti and Tossavainen, Timo (2019) Arithmetic subderivatives and Leibniz-additive functions. Annales Mathematicae et Informaticae, 50. pp. 145-157. ISSN 1787-5021 (Print) 1787-6117 (Online)

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