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Issue 1
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Front matter
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Article: A unifying framework for generalizations of the Eneström-Kakeya theorem
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1
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Article: Logical equivalence of the fundamental theorems on operators between Banach spaces
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15
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Article: Mittelwerte als Minima
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23
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Article: Inequalities of Levin-Strečkin, Clausing and Chebyshev revisited
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32
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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: Constructions of isospectral circulant graphs
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45
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Article: Drittes Hilbertsches Problem mit Dehn-Invariante : eine Elementarisierung mit Kugeldreiecken
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58
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Article: Mean value theorems and convexity : an example of cross-fertilization of two mathematical items
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69
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Article: A simple proof of the infinitude of primes
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80
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Rubric: Aufgaben
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81
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Back matter
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Issue 3
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Front matter
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Article: Ratios, roots and means : a quartet of convergence tests
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89
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Article: Characteristics of modulo one sequences
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103
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Article: An application of Euclidian algorithm in cryptanalysis of RSA
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114
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Article: Mixtilinear radii and Finsler-Hadwiger inequality
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121
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Article: A proof of the Schwarz theorem on mixed partial derivatives via elementary approximation theory
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125
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Rubric: Aufgaben
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129
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Book review: Rezensionen
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135
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Back matter
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_
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Issue 4
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Front matter
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Article: Begegnung zwischen klassischen Mittelwerten und Kegelschnitten
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137
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Article: The irrationality measure of π as seen through the eyes of cos(n)
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152
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Article: An inequality for cevians and applications
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166
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Article: On the inequalities of Grüss-Čebyshev and Kantorovich : a probabilistic approach
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172
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Rubric: Aufgaben
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176
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Book review: Rezensionen
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180
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Table of Contents
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183
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Back matter
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187
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