The concept of relative t-designs for Q-polynomial association schemes is due to Delsarte(Philips Res Rep 32: 373C411, 1997). In this paper, we discuss the Fish
Given a maximal subgroup M of a group G, aθ?-completion C of M is called an s?-completion if either C =G or there exists a subgroup D of G which is not aθ?-co
In this paper, we first give and prove a geometric identity for distance between any point and mass-points of two mass-points systems in n-dimensional Euclidean
The Fekete-Szeg¨o inequality for a subclass H(α,λ, A, B) of the class H of nor-malized analytic functions is studied. For each f (z) = z+∞P n=2 anzn ∈ H(α
A non-autonomous SIR epidemic model of prey-predator with vaccination and time delay is investigated in this paper. And an infectious disease is only considered
While studying the flow of oil and gas in the reservoir, it is not realistic that capillary with circular section is only used to express the pores. It is more