In this paper, we will introduce some knowledge of relative properties of p-polynomials in Hecke algebra with unequal parameters. We give the calculation formulas of Laurent polynomials p x,w in Dihedral group I 2 (m) with l(w) − l(x) = 3.
In this paper, we deal with the Bruhat ordering in Coxeter groups of type D n. At first, we consider the Bruhat ordering of N n. Then, we get some conclusions about Bruhat ordering between with N n , W n .
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