Zentralblatt MATH
Publications of (and about) Paul Erdös
Zbl.No: 285.05004
Autor: Erdös, Paul
Title: Remark on a theorem of Lindström. (In English)
Source: J. Comb. Theory, Ser. A 17, 129-130 (1974).
Review: The author proves the following theorem: Let |S| = k > \aleph0, A\alpha, 1 \leq \alpha < \omegam, are m subsets of S, if m > k. Then there are m disjoint sets of indices I\gamma so that the m sets \bigcupj in I\gamma Aj are all equal. If m \leq k the theorem is not true.
Classif.: * 05A05 Combinatorial choice problems
© European Mathematical Society & FIZ Karlsruhe & Springer-Verlag