On the Hochschild cohomology ring of the quaternion group of order eight   in characteristic two
  Let $k$ be an algebraically closed field of characteristic two and let $Q_8$ be the quaternion group of order $8$. We determine the Gerstenhaber Lie algebra structure and the Batalin-Vilkovisky structure on the Hochschild cohomology ring of the group algebra $kQ_8$. 
Alexander Ivanov, Sergei O. Ivanov, Yury Volkov, Guodong Zhou
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