Abstract
From the definition of a strong and weakn-ary relation betweenn sets, given in a previous paper (Bulletin of Mathematical Biophysics,27, 477–492), it follows that for a given set ofn sets and givenn-ary relationR between them there can exist only one strong relation, but a large number of weak ones. An expression for the total number of possible weak relations is derived and the notion of the degree of weakness of a relation is introduced and discussed.
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Literature
Rashevsky, N. 1961. “On Relations Between Sets”,Bull. Math. Biophysics,28, 233–235.
— 1965. “On Relations Between Sets: II”,,28, 117–124.
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Rashevsky, N. A note on relations between sets. Bulletin of Mathematical Biophysics 28, 309–313 (1966). https://doi.org/10.1007/BF02477001
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DOI: https://doi.org/10.1007/BF02477001