Traversing regions of supersolvable hyperplane arrangements and their lattice quotients
De Torsten Mütze
Extending the ab-index for braid and reflection arrangements
De Christian Stump
Apparaît dans la collection : 2016 - T1 - WS2 - Fundamental inequalities and lower bounds theme
Define the Stam region as the subset of the positive orthant in R^{2N−1} that arises from considering entropy powers of subset sums of N independent random vectors taking values in some Euclidean space. It is shown that the fractionally superadditive set functions give an outer bound for the Stam region, but that the supermodular set functions do not. In addition, various structural properties of the Stam region are explored.