It has to do with the reducibility of two-sided weighted shifts . 它与两侧的加数移位的可约性有关。
2.
This thesis consists of two parts . part i deals with the automorphism group of heisenberg lie algebra and part ii deals with the standard kac - moody algebras and the completely reducibility of integrable modules 本文由两部分构成：第一部分： heisenberg李代数的自同构群；第二部分：典范kac - moody代数与可积模的完全可约性。
