ar X iv : c s . D C / 0 10 80 19 v 1 2 7 A ug 2 00 1 Scalable Unix Commands for Parallel Processors : A High - Performance Implementation ⋆

ar X iv : n uc l - ex / 0 30 80 20 v 1 1 9 A ug 2 00 3 Elliptic Flow from Au + Au Collisions at √ s NN = 200 GeV

This paper presents results of elliptic flow measurements at moderate high transverse momentum in Au+Au collisions using the STAR detector at RHIC. Sizable v 2 is found up to 7 GeV/c in transverse momentum. Non-flow effects are discussed comparing correlations in p+p collisions and Au+Au collisions. v 2 from two-, four-and six-particle cumulant are shown and discussed.

ar X iv : 0 80 3 . 44 39 v 2 [ m at h . D S ] 4 A ug 2 00 8 PERIODIC UNIQUE BETA - EXPANSIONS : THE SHARKOVSKIĬ ORDERING

Let β ∈ (1, 2). Each x ∈ [0, 1 β−1 ] can be represented in the form

ar X iv : 0 80 8 . 01 63 v 1 [ cs . D S ] 1 A ug 2 00 8 Twice - Ramanujan Sparsifiers ∗

We prove that for every d > 1 and every undirected, weighted graph G = (V, E), there exists a weighted graph H with at most ⌈d |V |⌉ edges such that for every x ∈ IR , 1 ≤ x T LHx x LGx ≤ d + 1 + 2 √ d d + 1 − 2 √ d , where LG and LH are the Laplacian matrices of G and H , respectively.

ar X iv : 0 80 8 . 10 23 v 1 [ qu an t - ph ] 7 A ug 2 00 8 CATEGORICAL QUANTUM MECHANICS

ar X iv : n uc l - ex / 0 50 80 13 v 1 1 1 A ug 2 00 5 Rapidity Dependence of High - p T Suppression

The rapidity dependence of nuclear modifications factor in d-Au collisions at √ s NN = 200 GeV at RHIC is discussed.