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Generalized adjoint actions

128   0   0.0 ( 0 )
 نشر من قبل Arkady Berenstein
 تاريخ النشر 2015
  مجال البحث
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The aim of this paper is to generalize the classical formula $e^xye^{-x}=sumlimits_{kge 0} frac{1}{k!} (ad~x)^k(y)$ by replacing $e^x$ with any formal power series $displaystyle {f(x)=1+sum_{kge 1} a_kx^k}$. We also obtain combinatorial applications to $q$-exponentials, $q$-binomials, and Hall-Littlewood polynomials.

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