scholarly journals The 2- and 3-modular characters of the sporadic simple Fischer group Fi22 and its cover

2007 ◽  
Vol 309 (2) ◽  
pp. 723-743 ◽  
Author(s):  
Felix Noeske
Keyword(s):  
2010 ◽  
Vol 17 (03) ◽  
pp. 389-414 ◽  
Author(s):  
Faryad Ali ◽  
Jamshid Moori

The Fischer group [Formula: see text] is the largest 3-transposition sporadic group of order 2510411418381323442585600 = 222.316.52.73.11.13.17.23.29. It is generated by a conjugacy class of 306936 transpositions. Wilson [15] completely determined all the maximal 3-local subgroups of Fi24. In the present paper, we determine the Fischer-Clifford matrices and hence compute the character table of the non-split extension 37· (O7(3):2), which is a maximal 3-local subgroup of the automorphism group Fi24 of index 125168046080 using the technique of Fischer-Clifford matrices. Most of the calculations are carried out using the computer algebra systems GAP and MAGMA.


1977 ◽  
Vol 46 (2) ◽  
pp. 334-343 ◽  
Author(s):  
Gerard M Enright
Keyword(s):  

2018 ◽  
Vol 28 (2) ◽  
pp. 185-193
Author(s):  
Lukas Görgen ◽  
Gerhard Hiss ◽  
Klaus Lux
Keyword(s):  

2016 ◽  
Vol 19 (1) ◽  
pp. 105-154 ◽  
Author(s):  
Peter Rowley ◽  
Ben Wright

The point-line collinearity graph ${\mathcal{G}}$ of the maximal 2-local geometry for the largest simple Fischer group, $Fi_{24}^{\prime }$, is extensively analysed. For an arbitrary vertex $a$ of ${\mathcal{G}}$, the $i\text{th}$-disc of $a$ is described in detail. As a consequence, it follows that ${\mathcal{G}}$ has diameter $5$. The collapsed adjacency matrix of ${\mathcal{G}}$ is given as well as accompanying computer files which contain a wealth of data about ${\mathcal{G}}$.Supplementary materials are available with this article.


2006 ◽  
Vol 300 (2) ◽  
pp. 555-570 ◽  
Author(s):  
Gerhard Hiss ◽  
Max Neunhöffer ◽  
Felix Noeske
Keyword(s):  

Author(s):  
Peter Rowley ◽  
◽  
Louise Walker ◽  

Using Curtis’s MOG [3], we display the orbits and orbit representatives for various subgroups of the Mathieu group acting on the octads of the Steiner system This information is deployed in [8] and [9] to study a graph associated with the largest simple Fischer group.


1976 ◽  
Vol 28 (5) ◽  
pp. 929-937 ◽  
Author(s):  
W. Jónsson ◽  
J. McKay

We assume familiarity with the notation and contents of Conway [2] and Edge [3]. That the Mathieu group is a subgroup of the simple group PSU (6, 22) appears to have been first recognized by Conway and is consequent upon his identification of ·222 with PSU (6, 22). Although we know of no proof of this identification in the literature, several proofs exist in the folklore of the subject: for example, N. Patterson showed one of the authors a proof that depends on ·222 being a Fischer group, hence on consideration of order, isomorphic to PSU (6, 22). There is another proof which relies on McLaughlin's work on rank three groups.


2006 ◽  
Vol 21 (1-2) ◽  
pp. 393-409 ◽  
Author(s):  
A. R. Ashrafi ◽  
G. A. Moghani
Keyword(s):  

2019 ◽  
Vol 42 (2) ◽  
pp. 229-238
Author(s):  
Faryad Ali ◽  
Mohammed A. Al-Kadhi
Keyword(s):  

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