Kimmerle Conjecture for the Held and O’nan Sporadic Simple Groups
نویسنده
چکیده
Using the Luthar–Passi method, we investigate the Zassenhaus and Kimmerle conjectures for normalized unit groups of integral group rings of the Held and O’Nan sporadic simple groups. We confirm the Kimmerle conjecture for the Held simple group and also derive for both groups some extra information relevant to the classical Zassenhaus conjecture. Let U(ZG) be the unit group of the integral group ring ZG of a finite group G. It is well known that U(ZG) = U(Z)× V (ZG), where
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