Subsets

Tom Johnson () and Franck Jedrzejewski ()

Chapter Chapter 3 in Looking at Numbers, 2014, pp 31-35 from Springer

Abstract: Abstract Consider the set of digits 1,2,3,4,5. Taking the elements two at a time, we have 10 subsets: 1,2, 1,3, 1,4, 1,5, 2,3, 2,4, 2,5, 3,4, 3,5, 4,5. This is quite obvious, and yet the forms that result when you really look at these pairs and try to make connections between them can be surprising.

Keywords: Simple Block Design; Duplets; Quintuplet; Balanced Incomplete Block Design (BIBD); Quadruplet (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/978-3-0348-0554-4_3

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