Effective Functional Form of Regge Trajectories

We present theoretical arguments and strong phenomenological evidence that hadronic Regge trajectories are essentially nonlinear and can be well approximated, for phenomenological purposes, by a specific square-root form.Comment: 29 pages, LaTeX. Published versio

A Note on FC-Groups

Let G be an arbitrary FC-group, let R be its locally soluble radical, and let L/R = L(G/R). We prove that, for N ⊲ G, G/N is residually finite if R ⊆ N ⊆ L.Нехай G — довільна FG-група, R — її локально розв'язний радикал і L/R=L(G/R). Доведено, що для N⊲G,G/N фінітно апроксимовна у випадку, коли R⊆N⊆L