منابع مشابه
From Well-Quasi-Ordered Sets to Better-Quasi-Ordered Sets
We consider conditions which force a well-quasi-ordered poset (wqo) to be betterquasi-ordered (bqo). In particular we obtain that if a poset P is wqo and the set Sω(P ) of strictly increasing sequences of elements of P is bqo under domination, then P is bqo. As a consequence, we get the same conclusion if Sω(P ) is replaced by J (P ), the collection of non-principal ideals of P , or by AM(P ), ...
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ژورنال
عنوان ژورنال: Czechoslovak Mathematical Journal
سال: 1965
ISSN: 0011-4642,1572-9141
DOI: 10.21136/cmj.1965.100696