Teaching of oral speaking is always one of the weak points in higher education. With the aim of cultivating the new type talent with the all-round development of listening,speaking,reading and writing,exploring the theory and way of the oral examination,making the oral examination as the scientific and fair test for students oral communicative ability,and developing the Chinese teaching in the minorities is the needs of the times.
As social development and progression, the traditional teaching rationality on writing is also changing with it into the new type rationality of realizing man's variegation and personification, and grow into the unity of scietific spirit and humanistic spirit.
The purpose of this note is to prove, as Lusztig stated, that the Euler characteristic of the variety of Iwahori subalgebras containing a certain nil-elliptic elementnt istcl wherel is the rank of the associated finite type Lie algebra.
BC-type interpolation Macdonald polynomials and binomial formula for Koornwinder polynomials
We consider 3-parametric polynomialsPμ*(x; q, t, s) which replace theAn-series interpolation Macdonald polynomialsPμ*(x; q, t) for theBCn-type root system.
The Yang-Baxter equation admits two classes of elliptic solutions, the vertex type and the face type.
The essential dimension is a numerical invariant of the group; it is often equal to the minimal number of independent parameters required to describe all algebraic objects of a certain type.