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Issue 1
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Front matter
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Article: Finding periodic solutions without finding eigenvalues
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1
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Article: Tiling by incongruent equilateral triangles without requiring local finiteness, Part II
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15
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Article: On some irrational decimal fractions, revisited
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23
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Article: A short combinatorial proof of derangement identity
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29
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Article: An algorithm for nontransitive partitions
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34
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Rubric: Aufgaben
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37
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Book review: Rezensionen
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44
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Back matter
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Issue 2
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Front matter
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Article: Tetraeder mit inhaltsgleichen Seitenflächen
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45
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Article: Distances in rectangles and parallelograms
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56
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Article: Thue's lemma in Z[i] and Lagrange's four-square theorem
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60
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Article: Tile the group
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66
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Article: Zur Entstehung der Mengenlehre I : aus Briefen zwischen Richard Dedekind und Georg Canto
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74
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Rubric: Aufgaben
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81
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Book review: Rezensionen
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86
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Back matter
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Issue 3
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Front matter
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Article: An extension of the Lobachevsky formula
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89
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Article: Jakob Hermanns Lösung des Kepler-Problems mit einer Erhaltungsgrösse
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95
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Article: A few simple Levi-Civita functional equations on groups
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109
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Article: Zur Entstehung der Mengenlehre II : aus Briefen zwischen Richard Dedekind und Georg Cantor
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122
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Article: Eine Dobiński-Reihe für die Anzahl surjektiver Abbildungen
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130
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Article: 3 in 1 : a simple way to prove that er, ln(r) and π2 are irrational
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133
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Article: A short and elementary proof of the structure theorem for finitely generated modules over PIDs
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136
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Rubric: Aufgaben
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139
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Book review: Rezensionen
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144
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Back matter
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Issue 4
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Front matter
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Article: Calculus style proof of Poncelet's theorem for two ellipses
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145
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Article: The Lucas property for linear recurrences of second order
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151
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Article: Walking on rational numbers and a self-referential formula
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161
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Article: How to find your soulmate : set your goal vs. aim at dating sites
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170
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Article: F. Commandino, de centro gravitatis solidorum, 1565
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179
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Rubric: Aufgaben
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182
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Book review: Rezensionen
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187
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Table of Contents
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189
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Back matter
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