N
Norbert Sauer
Researcher at University of Calgary
Publications - 112
Citations - 3085
Norbert Sauer is an academic researcher from University of Calgary. The author has contributed to research in topics: Countable set & Metric space. The author has an hindex of 22, co-authored 111 publications receiving 2801 citations. Previous affiliations of Norbert Sauer include Emory University & University of La Réunion.
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On order polynomially complete lattices
TL;DR: In this paper, it was shown that no unbounded lattice is order polynomially complete and hence cannot be countably infinite, and from this, it was deduced that a polynomial-time order-polynomially complete lattice cannot be infinite.
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The length, the width and the cutset-number of finite ordered sets
M. El-Zahar,Norbert Sauer +1 more
TL;DR: The partially ordered set P is an (α, β, γ) ordered set if the width of P, the length of any chain of P and the cut-set number ≤γ as discussed by the authors.
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A Ramsey theorem for countable homogeneous directed graphs
TL;DR: This paper completely describes the vertex partition property HT, which is the property of countable homogeneous directed graph which does not embed any of the tournaments in T.
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Invariant subsets of scattered trees and the tree alternative property of Bonato and Tardif
TL;DR: In this article, it was shown that every scattered tree contains a vertex, an edge, or a set of at most two ends preserved by every embedding of T. This extends results of Halin, Polat and Sabidussi.
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Age and weak indivisibility
TL;DR: It is shown, in this paper, that a countable homogeneous ultrametric space is age indivisible if and only if it is weaklyIndivisible.