Mult = 2.

Out = 2.

Standard generators of the double cover 2.O9(3) are preimages

Standard generators of O9(3):2 are **c** and **d** where
**c** has order 2E, **d** is in class 9NO, **cd** has order 84
and **cdcdd** has order 12.

Standard generators of either double cover 2.O9(3):2 are preimages
**C** and **D** where **D** has order 9.

NB 1: The generators for [2.]O9(3):2 in v1 and v2.0 are identical, but the generators for O9(3) in v1 and v2.0 differ despite the fact that the v1generators are (2, 9, 41)generators - the involution is in the wrong class.

NB 2: Classes 2A and 2E are the classes of negated reflections. Classes 9N/O are the elements of order 9 whose centraliser order in both O9(3) and O9(3):2 is 81.

Go to main ATLAS (version 2.0) page.

Go to classical groups page.

Go to old O9(3) page - ATLAS version 1.

Anonymous ftp access is also available. Click here for details.

Version 2.0 created on 24th August 2000.

Last updated 17.10.00 by JNB.

Information checked to Level 0 on 24.08.00 by JNB.

R.A.Wilson, R.A.Parker and J.N.Bray.