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ordinality.it
Nome del dominio - ordinality.it
Titolo del sito - Ordinality.it
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Posizione GEO del sito
Posizione Paese - Italy
Città/Paese - Arezzo
Fornitore - Aruba S.p.A.
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Brief facts about ordinality:
In mathematics, especially in set theory, two ordered sets X,Y are said to have the same order type just when they are order isomorphic, that is, when there exists a bijection f: X → Y such that both f and its inverse are strictly increasing. In the special case when X is totally ordered, monotonicity of f implies monotonicity of its inverse.
Well-order - In mathematics, a well-order on a set S is a total ordering on S with the property that every non-empty subset of S has a least element in this ordering. The set S together with the ordering is then called a well-ordered set.
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