A Class Of Generalized Witt Algebra (?) [g] Subalgebra And Its Automorphism

As a liear differential operator of Laurent polynomial,Witt algebra is an important kind of infinite dimensional Lie algebra.There have been many important results.A kind of generalized Witt algebra will be studied in this paper.The main Contents include the following three parts.Chapter one is Introduced to the structure of Witt algebraic and some important results.Subalgebras of the generalized Witt algebra and two important kind of simple subalgebras is introduced in chapter two.Using the theory of pell equation,all automorphisms of the generalized witt algebra is constructed.Those are...