Notes
106.07 A function-based proof of the harmonic mean − geometric mean − arithmetic mean inequalities
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- 24 February 2022, pp. 130-131
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106.08 Proof without words: the Cauchy-Schwarz inequality using analytic geometry
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- 24 February 2022, p. 132
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106.09 Observations on a proof without words
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- 24 February 2022, pp. 133-134
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106.10 PWW: Trigonometric inequality
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- 24 February 2022, p. 134
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106.11 On a synthetic proof of Bottema's theorem
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- 24 February 2022, pp. 135-136
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106.12 A new proof of the n-dimensional Pythagorean theorem
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- 24 February 2022, pp. 136-137
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106.13 A triangle inequality
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- 24 February 2022, p. 138
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106.14 Exarc radii and the Finsler-Hadwiger inequality
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- 24 February 2022, pp. 138-143
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106.15 A proof of Lukarevski’s conjecture
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- 24 February 2022, pp. 143-147
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106.16 Sums of Hex numbers are cubes − a planar Proof without Words
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- 24 February 2022, pp. 147-148
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Teaching Notes
A quick simultaneous evaluation of ∑ k3 and ∑ k2
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- 24 February 2022, p. 149
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How to impress a chemist (again!)
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- 24 February 2022, pp. 149-150
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Two unusual optimisation problems
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- 24 February 2022, pp. 151-154
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Correspondence
Correspondence
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- 24 February 2022, p. 155
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Correspondence
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- 24 February 2022, pp. 155-156
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Feedback
On 105.28
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- 24 February 2022, pp. 156-158
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On 105.49
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- 24 February 2022, p. 158
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Problem Corner
Problem Corner
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- 24 February 2022, pp. 159-166
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Student Problems
Student Problems
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- 24 February 2022, pp. 167-169
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Reviews
Mathematics at the meridian: the history of mathematics at Greenwich edited by Raymond Flood, Tony Mann and Mary Croarken, pp 241, £20.40 (paper), ISBN 978-0-367-36272-0, Chapman & Hall/CRC (2020)
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- 24 February 2022, pp. 170-172
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