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Crown-free highly arc-transitive digraphs

  • Daniela Amato EMAIL logo and John K. Truss
Published/Copyright: January 19, 2012

Abstract.

We construct a family of infinite, non-locally finite highly arc-transitive digraphs which do not have universal reachability relation and which omit special digraphs called `crowns'. Moreover, there is no homomorphism from any of our digraphs onto Z. The methods are adapted from [6] and [7].

Received: 2009-05-18
Revised: 2010-02-26
Published Online: 2012-01-19
Published in Print: 2012-January

© 2012 by Walter de Gruyter Berlin Boston

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