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Название: Topics on Steiner systems
Авторы: Linder C.C. (ed.), Rosa A. (ed.)
The concept of a Steiner Triple System is so simple that any reasonably intelligent grade school student could understand it. A mathematician not familiar with the notion and its history, may well have concluded that the Kirkman paper of 1847, which settled the existence question, said all there was to say about this "puzzle". Instead of this we find that in the intervening 132 years a large and impressive literature has grown up...