Let Wβ(x)=exp(-1/2|x|β)be the Freud weight and pn(x) ∈пn be the sequence of orthogonal polynomials with respect to W2β(x),that is,∫∞-∞pn(x)pm(x)W2β(x)d
In this paper,we prove the dual Toeplitz algebra I(C(-Dn)) contains the ideal к of compact operators as its semicommutator ideal,and study its algebraic struct
In this paper,we first give the concept of weakly P-inversive semigroup S(P).Then we describe the strong P-congruences on S(P)in terms of their P-kernel normal
Let X be a nonempty subset of a group G.A subgroup H of G is said to be X-spermutable in G if,for every Sylow subgroup T of G,there exists an element x ∈X such
In this paper F always denotes a field of characteristic P>2.We construct the finitedimensional modular Lie superalgebra W(m,n,l,(t))over a field F,define θ-typ