(2,m,n)-groups with Euler characteristic equal to $-2^as^b$

Gill, Nick (2013). (2,m,n)-groups with Euler characteristic equal to $-2^as^b$. Electronic Journal of Combinatorics, 20(3), article no. 8.

URL: http://www.combinatorics.org/ojs/index.php/eljc/ar...


We study those $(2, m, n)$-groups which are almost simple and for which the absolute value of the Euler characteristic is a product of two prime powers. All such groups which are not isomorphic to $PSL_2 (q)$ or $PGL_2(q)$ are completely classified.

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