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On well-quasi-ordering infinite trees – Nash–Williams's theorem revisited

Published online by Cambridge University Press:  18 May 2001

DANIELA KÜHN
DANIELA KÜHN
Affiliation:
Mathematisches Seminar der Universität Hamburg, Bundesstraße 55, 20146 Hamburg, Germany. e-mail: [email protected]
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Abstract

Nash–Williams proved that the infinite trees are well-quasi-ordered (indeed, better-quasi-ordered) under the topological minor relation. We combine ideas of several authors into a more accessible and essentially self-contained short proof.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 130 , Issue 3 , May 2001 , pp. 401 - 408
Copyright
2001 Cambridge Philosophical Society

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