%0 Journal Article %T $¦Ò_1$ and $¦Ò_2$ automorphism of the systems of equations of integrable hierarchies. Discrete and Backlund transformations %A A. N. Leznov %J Mathematics %D 2005 %I arXiv %X It is shown that there exists two inner authomorpism which lead to different form of the sistems equations of integrable hierarchy. We present discrete and Backlund transformation connected with such systems and a general formula for multi-soliton solutions based on these symmetries. %U http://arxiv.org/abs/math-ph/0503043v1