2-colourings in \(S(t, t+1, v)\)
type: Item
instance of: scholarly article
title: 2-colourings in \(S(t, t+1, v)\)
zbMATH Open document ID: 0789.05005
DOI: 10.1016/0012-365X(93)90161-L
author: Mario Gionfriddo
author: Giovanni Lo Faro
published in: Discrete Mathematics
publication date: 1994-01-04T00:00:00Z
review text: The authors generalize to Steiner systems \(S(t,t+1,v)\) a well-known result for \(\text{STS} (v)\)'s and \(\text{SQS} (v)\)'s. Namely, there is no blocking set (2-colouring) when \(t\) is even, and when \(t\) is odd, the size of a blocking set, if it exists, is \(v/2\).
Mathematics Subject Classification ID: 05B07
zbMATH DE Number: 428319
zbMATH Keywords: 2-colouring
zbMATH Keywords: Steiner systems
zbMATH Keywords: blocking set
MaRDI profile type: Publication
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full work available at URL: 0012-365x(93)90161-l
OpenAlex ID: W2060903451
description: scientific article; zbMATH DE number 428319