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104.10 Alternating series in an equilateral triangle – two Proofs Without Words

Published online by Cambridge University Press:  02 March 2020

Stephan Berendonk
Stephan Berendonk*
Affiliation:
Didaktik der Mathematik, Universität Duisburg-Essen, Thea-Leymannstraße 9, 45127Essen, Germany e-mail: stephan.berendonk@uni-due.de
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Information
The Mathematical Gazette , Volume 104 , Issue 559 , March 2020 , pp. 170 - 171
Copyright
© Mathematical Association 2020

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References

Roger, B. Nelsen, Proofs without Words III: Further Exercises in Visual Thinking, The Mathematical Association of America (2015) pp. 160–161.Google Scholar
Roger, B. Nelsen, Proof Without Words: An Alternating Series, College Mathematics Journal 43 (5), (2012) p. 370.Google Scholar
Unal, Hasan, Proof Without Words: Sum of an Infinite Series, College Mathematics Journal 40 (1), (2009) p. 39.CrossRefGoogle Scholar