Pythagoras--space traveller with a one-way ticket
H.R. Schneebeli
págs. 283-289
Gareth A. Jones
págs. 290-296
Robert J. Clarke, Marta Sved
págs. 299-303
An old algorithm for the sums of integer powers
David M. Bloom
págs. 304-305
Roman Wong
págs. 306-309
An unconventional orthonormal basis provides an unexpected counterexample
Giuseppe Marino, Paolamaria Pietramala
págs. 309-311
Conversion of sequences from deductive to inductive form
David F. Skrbina
págs. 312-313
The square roots of 2 x 2 matrices
Donald Sullivan
págs. 314-316
pág. 316
Donald E.G. Malm
págs. 317-320
Houston Euler
pág. 321
The central conic sections revisited
Ayoub B. Ayoub
págs. 322-325
Proof without words: Sum of pentagonal numbers
William A. Miller
pág. 325
Comparing comparisons: Infinite sums vs. partial sums
Kendall Richards
págs. 326-327
Interchanging parameters of the hypergeometric distribution
R.R. Davidson, B.R. Johnson
págs. 328-329
Proof without words: kth power of a natural number n as the sum of n consecutive odd numbers
N. Gopalakrishn Nair
pág. 329
An elementary extension of Tietze's theorem
Martin W. Bartelt, John J. Swetits
págs. 330-332
B.F. Sherman
págs. 333-337
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