The twisted Grassmann graph is the block graph of a design

Authors

Akihiro Munemasa, Tohoku University
Vladimir Tonchev, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

9-3-2009

Abstract

In this note, we show that the twisted Grassmann graph constructed by Van Dam and Koolen is the block graph of the design constructed by Jungnickel and Tonchev. We also show that the full automorphism group of the design is isomorphic to the full automorphism group that of the twisted Grassmann graph.

Publisher's Statement

Copyright 2009 Mathematical Science Publishers. All rights reserved. Publisher’s version of record: https://dx.doi.org/10.2140/iig.2011.12.1

Publication Title

Innovations in Incidence Geometry

Recommended Citation

Munemasa, A., & Tonchev, V. (2009). The twisted Grassmann graph is the block graph of a design. Innovations in Incidence Geometry, 12(1), 1-6. http://doi.org/10.2140/iig.2011.12.1
Retrieved from: https://digitalcommons.mtu.edu/math-fp/95