Let $ G $ be a periodic group, and let $ \omega(G)\subseteq{đť•…} $ be the spectrum of $ G $ that is the set of orders of elements in $… Click to show full abstract
Let $ G $ be a periodic group, and let $ \omega(G)\subseteq{𝕅} $ be the spectrum of $ G $ that is the set of orders of elements in $ G $ . We prove that the alternating group $ A_{7} $ is uniquely recognized by its spectrum in the class of all groups.
               
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