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Branches of the E-tree which are not isomorphic

par Misercque, Didier R.
Référence Bulletin of the London Mathematical Society, 17, 6, page (513-517)
Publication Publié, 1985

Article révisé par les pairs

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Résumé :

We prove that there is a branch of the E-tree which has an immediate successor to its minimum. This answers questions raised by D. Jensen and A. Ehrenfeucht in [1] and by H. Simmons in [4]. © 1985 Oxford University Press.