E-Periodica Schweizer Zeitschriften online. Revues suisses en ligne. Swiss journals online.

Volume 78 (2023)
Heading Page
Cahier 1 _
Pages liminaires _
Article: Intriguing infinite words composed of zeros and ones 1
Article: Dreiecke, Teildreiecke und Kreise 9
Article: Is the spiral effect psychological? 21
Article: Wolstenholme's theorem revisited 35
Article: An inequality for the ratio of polynomials 37
Article: Angle sum of polygons in space 41
Rubrique: Aufgaben 44
Pages complémentaires _
Cahier 2 _
Pages liminaires _
Article: Cycles cross ratio : an invitation 49
Article: Isogonal cevians and inequalities for quotients of cevians 62
Article: Unit squares with unit line segments 68
Article: Unlikely leading digits of powers of 2 77
Article: The Garfunkel-Bankoff inequality and the Finsler-Hadwiger inequality 82
Rubrique: Aufgaben 85
Compte rendu de lecture: Rezensionen 90
Pages complémentaires _
Cahier 3 _
Pages liminaires _
Article: Another extension of Lobachevsky's formula 93
Article: Regression ellipses via hyperbolic geometry 101
Article: Approximation of polynomials by Hermite interpolation 113
Article: Isosceles tetrahedrons with integer edges and volume in the Z x Z x Z grid 123
Article: A remark on an identity involving products of binomial coefficients 127
Article: A simple proof of the Fundamental Theorem of Algebra 131
Compte rendu de lecture: Rezensionen 133
Rubrique: Aufgaben 135
Pages complémentaires _
Cahier 4 _
Pages liminaires _
Article: Daniel Bernoulli's "immensly fertile equation" : notes on relations between a nonlinear and a linear second order equation 141
Article: Die Infizierung des Z² 155
Article: The equation x/y + y/z + z/x = 4 revisited 168
Article: Hermite's identity and the quadratic reciprocity law 171
Article: Two proofs of Bondy's theorem on induced subsets and two related questions 174
Compte rendu de lecture: Rezensionen 178
Rubrique: Aufgaben 180
Pages complémentaires _