Vol. 12, No. 1, 2011

Download this article
Download this article For screen
For printing
Recent Issues
Volume 17, Issue 2
Volume 17, Issue 1
Volume 16, Issue 1
Volume 15, Issue 1
Volume 14, Issue 1
Volume 13, Issue 1
Volume 12, Issue 1
Volume 11, Issue 1
Volume 10, Issue 1
Volume 9, Issue 1
Volume 8, Issue 1
Volume 6+7, Issue 1
Volume 5, Issue 1
Volume 4, Issue 1
Volume 3, Issue 1
Volume 2, Issue 1
Volume 1, Issue 1
The Journal
About the Journal
Subscriptions
Editorial Board
Submission Guidelines
Submission Form
Ethics Statement
To Appear
Editorial Login
Contacts
ISSN (electronic): 2640-7345
ISSN (print): 2640-7337
Other MSP Journals
The twisted Grassmann graph is the block graph of a design

Akihiro Munemasa and Vladimir D. Tonchev

Vol. 12 (2011), No. 1, 1–6
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.

Milestones
Received: 13 July 2009
Accepted: 3 September 2009
Authors
Akihiro Munemasa
Vladimir D. Tonchev
Mathematical Sciences
Michigan Technological University
1400 Townsend Drive
Houghton, MI 49931-1295
United States