Sofic groups and convolution operators

نویسنده

  • Gábor Elek
چکیده

Conjecture: Let Γ be a discrete group, f ∈ L(Γ) and Tf : L (Γ) → L(Γ) be the right convolution by f . Then if Tf is injective, it is surjective as well. We prove the conjecture for the class of sofic groups. AMS Subject Classification: 43A20

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تاریخ انتشار 2006