Papers in Journals / Artikel in Zeitschriften
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Euclidean Constructions And The Geometry Of Origami, Mathematics Magazine, Vol. 68, Nr. 5, Dec. 1995, pp. 357-371 |
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Mathematics Competitions For Students Under 15 In Austria (with/mit Gottfried Perz), Mathematics
Competitions, Vol. 8, Nr. 2, 1995, pp. 10-31 |
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Folding the Regular Heptagon, Crux Mathematicorum
with Mathematical Mayhem, Vol 23, Nr. 2, March/März 1997, pp. 81-88 download (click here / hier anklicken) |
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Folding the Regular Nonagon, Crux Mathematicorum with Mathematical Mayhem, Vol 23, Nr. 4, May/Mai 1997,
pp. 210-217 download
(click here / hier anklicken) |
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25 Years (and more) of the Austrian Mathematical Olympiad (with/mit Thomas Mühlgassner
and/und Gottfried Perz),
Mathematics Competitions, Vol. 10, Nr. 1, 1997, pp.
79-96 |
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Considering a Curious Quintic, Mathematics and Informatics
Quarterly, Vol. 8, Nr. 1, 1998, pp. 7-11 |
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Einige Interessante Parabelvervollständigungskonstruktionen, Informationsblätter für Darstellende Geometrie (IBDG), Jg. 18, Heft 1/1999, pp. 14-19 also published as / auch erschienen als Nekoliko interesantnih konstrukcija u potpunjavanja parabole, (translated by / übersetzt von Elma Hadzovic), Triangle Vol. 6, Nr. 1, October/Oktober 2002, pp. 13-20 |
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Deriving Some Problems in Inequalities from an Accidental
Generalization, Mathematics Competitions Vol.
12, Nr. 1, 1999, pp. 27-37 |
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Domesticating the Kangaroo at BRG Keplerstrasse,
Mathematics Competitions Vol. 12, Nr. 2, 1999, pp.
42-54 download
(click here / hier anklicken) |
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Generalized Rearrangement Inequalities (with/mit Walther Janous),
The American Mathematical Monthly, Vol. 108, Nr. 2,
February/Februar 2001, pp. 158-165 |
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Internationaler
Wettbewerb Känguru der Mathematik (with/mit Michael Hofer),
Internationale Mathematische Nachrichten (IMN), Nr. 187, August 2001, pp.
49-56 download (click here / hier anklicken) |
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Raumgeometrische
Aufgaben im internationalen Wettbewerb Känguru der Mathematik (with/mit
Michael Hofer), Informationsblatt für darstellende Geometrie (IBDG), Jg. 21,
Heft 1/2002, pp. 4-5 download
(click here / hier
anklicken) |
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Zahlengolf, Internationale
Mathematische Nachrichten (IMN), Nr. 191, Dezember 2002, pp. 29-38 download (click here / hier anklicken) also published as / auch erschienen als Číselný Golf, (translated by / übersetzt von Filip Švrček), Matematika Fyzika Informatika, Vol. 13, Nr. 6, 2004, pp.321-331 |
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Numerical Polyhedron Problems, Mathematics Competitions Vol. 15, Nr. 2,
2002, pp.15-57 download
(click here / hier anklicken) |
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A Local International Mathematics Competition
(Special Edition) (with/mit
Jaroslav Švrček), Mathematics Competitions,
Vol 18, Nr. 1, 2005, pp. 39-51 |
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Die
48. Internationale Mathematikolympiade in Hanoi, Internationale
Mathematische Nachrichten (IMN), Nr. 206, Dezember 2007, ISSN 0020-7926, pp.
25-28 also published as / auch erschienen als Mathematik-Olympiade; Bericht von der 48. Internationalen Mathematikolympiade in Hanoi, Vietnam, news & science, Nr. 18, Ausgabe 1, 2008, ISSN: 1992-8823, pp 44-45 |
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Derde- en Vierde-Graads
Vouwen (Dutch translation of the English
original Paper Folding and Mathematics - An Introduction), Pythagoras,
48ste Jaargang, Nummer 5,
April 2009, ISSN 0033 4766, pp. 18-22 |
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Arbeitsblätter
zum Thema "Papierfalten und Algebra", MU - Der Mathematikunterricht,
Jahrgang 55, Heft 6, Dezember 2009, ISSN 0025-5807, pp. 33-47 die Arbeitsblätter gibt es hier / the worksheets can be downloaded (in German) here |
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Mathematics Competitions and a Career in Mathematics
– some anecdotes from Austria", Newsletter 3 of the International Group for
Mathematical Creativity and Giftedness, downloadable at https://drive.google.com/file/d/0B0me59gP4o6DeTJZVmw0ejNjZWs/view,
or here at MCG_Newsletter_3.pdf reprinted in Internationale Mathematische Nachrichten (IMN), Nr. 221, Dezember 2012, ISSN 0020-7926, pp. 43-46 |
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Suchen
nach der schönsten Aufgabe – Wie entstehen mathematische Wettbewerbe, Schriftenreihe
zur Didaktik der Mathematik der Österreichischen Mathematischen Gesellschaft (ÖMG),
Heft 44, Jänner 2012, pp.17-25 http://www.oemg.ac.at/DK/Didaktikhefte/2011%20Band%2044/VortragGeretschlaeger.pdf |
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Papierfalten
und Mathematik – eine Einführung, Informationsblätter für
Darstellende Geometrie (IBDG), Jg. 32, Heft 1/2013, pp. 16-21 |
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A Paper About Pentagon Problems, Mathematics Competitions Vol. 27, Nr. 2,
2014, pp.7-33 |
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Schachbrettaufgaben
vom mathematischen Duell,
Schriftenreihe zur Didaktik der Mathematik der Österreichischen
Mathematischen Gesellschaft (ÖMG), Heft 50, 2017, pp.1-8 https://www.oemg.ac.at/DK/Didaktikhefte/2017%20Band%2050/VortragGeretschlaeger.pdf |
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Using
Direct and Constructive Methods for the Existence of Origami Models with
Given Boundary Conditions. (with/mit
Stephen L. Keeling), Espacio Matemático
Vol. 1 (No. 1) 2020, (ISSN: 2711-1792), pp. 54-71 https://revistas.uan.edu.co/index.php/espaciomatematico https://revistas.uan.edu.co/index.php/espaciomatematico/article/view/1626/1246
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Math
Kangaroo, (with/mit Meike Akveld, Luis F.
Caceres-Duque), Mathematics
Competitions Vol. 33, Nr. 2, 2020, pp.48-66 wfnmc.org/Journal 2020 2.pdf |
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Writing
and choosing problems for a popular high school mathematics competition, (with/mit Lukas Donner), ZDM-Mathematics Education Vol. 54,
Issue 5, October 2022, pp.971-982 https://link.springer.com/article/10.1007/s11858-022-01351-9 |
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The
Road from Submission to Perfection, (with/mit
Lukas Donner), Mathematics Competitions Vol. 35, Nr. 1, 2022, pp.30-48
http://wfnmc.org/Journal%202022%201.pdf |
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Mathematical
Competitions Around the World in 2024 – an Approximation, Mathematics
Competitions Vol. 37, Nr. 1, 2024, pp.9-26 https://wfnmc.org/Journal%202024%201.pdf |
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Simple Origami Models with Boundaries on the Edges
of Platonic Solids,
unpublished manuscript, 2024 download (click here / hier anklicken) |
