scispace - formally typeset
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.

Papers
More filters
Journal ArticleDOI

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.
Journal ArticleDOI

The length, the width and the cutset-number of finite ordered sets

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.
Journal ArticleDOI

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.
Journal ArticleDOI

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.
Journal ArticleDOI

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.