Let a class F of densities be given. We draw an i.i.d. sample from a density f which may or may not be in F . After every n, one must make a guess whether f ∈ F or not. A class is almost surely discernible if there exists such a sequence of classification rules such that for any f , we make finitely many errors almost surely. In this paper several results are given that allow one to decide whet...

Abstract Because Ernest Hemingway published only one novel, a novella, and handful of short stories after his return from the battlefields France in 1945, he has often been viewed as writer suffering late-life decline. As posthumously books attest, however, during last fifteen years life, was very productive. In giving shape to many pages left behind, editors who have brought like A Moveable Fe...