ON THE FRTS APPROACH TO QUANTIZED CURRENT-ALGEBRAS

We study the possibility to establish L-operator's formalism by Faddee v-ReshetikhinTakhtajan-Semenov-Tian-Shansky (FRST) for quantized curre nt algebras, that is, for quantum affine algebras in the 'new realizat ion' by V. Drinfeld with the corresponding Hopf algebra structure and for their Yangian counterpart. We establish this formalism using the t wisting procedure by Tolstoy and the second author and explain the pro blems which on I:RST approach encounters for quantized current algebra s. We also show that, for the case of U-q (<(sl)over cap (n)>), entrie s of the L-operators of the FRTS type give the Drinfeld current operat ors for the nonsimple roots, which we discovered recently. As an appli cation, we deduce the commutation relations between these current oper ators for U-q (<(sl)over cap (n)>).