Judith Grabiner
págs. 83-97
The Ptolemy inequality and Minkowskian geometry
John D. Smith
págs. 98-109
Proof without words: Volume of a frustum of a square pyramid
Roger B. Nelsen
pág. 109
Is there any regularity in the distribution of prime numbers at the beginning of the sequence of
Silviu Guiasu
págs. 110-121
Minimum and characteristic polynomials of low-rank matrices
William P. Wardlaw
págs. 122-127
Ralph P. Boas Jr.
pág. 127
The kissing number of the square
M.S. Klamkin, T. Lewis
págs. 128-133
B. Sury
págs. 134-135
A certain property of an isosceles trapezoid and its application to chain circle problems
Fukuzo Suzuki
págs. 136-145
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