Results 51 to 60 of about 5,366,310 (324)

Ascent Sequences and Upper Triangular Matrices Containing Non-Negative Integers [PDF]

The Electronic Journal of Combinatorics, 2010
This paper presents a bijection between ascent sequences and upper triangular matrices whose non-negative entries are such that all rows and columns contain at least one non-zero entry. We show the equivalence of several natural statistics on these structures under this bijection and prove that some of these statistics are equidistributed.
Dukes, Mark, Parviainen, Robert
openaire   +5 more sources

Quantum Calogero-Moser Models: Integrability for all Root Systems [PDF]

, 2000
The issues related to the integrability of quantum Calogero-Moser models based on any root systems are addressed. For the models with degenerate potentials, i.e. the rational with/without the harmonic confining force, the hyperbolic and the trigonometric,
A J Pocklington, Awata H, Baker T H, Berezin F A, Bordner A J, Bordner A J, Bordner A J, Bordner A J, Bordner A J, Bordner A J, Bordner A J, Bordner A J, Bordner A J, Bordner A J, Brink L, Brink L, Brink L, Buchstaber V M, Calogero F, Calogero F, Calogero F, Calogero F, Calogero F, Calogero F, Cherednik I V, D'Hoker E, Dunkl C F, Efthimiou C, Erdélyi A, Gambardella P J, Ghosh P K, Gurappa N, Gurappa N, Gurappa N, Haschke O, Haschke O, Haschke O, Haschke O, Haschke O, Heckman G J, Heckman G J, Heckman G J, Kakei S, Kakei S, Khastgir S P, Khastgir S P, Krichever I M, Lapointe L, Lapointe L, Lapointe L, Lassalle M, Lassalle M, Lassalle M, Macdonald I G, Moser J, Moser J, Nishino A, Olshanetsky M A, Olshanetsky M A, Opdam E M, Opdam E M, Oshima T, Perelomov A M, R Sasaki, Rosenbaum M, Rosenbaum M, Ruijsenaars S N M, Rühl W, Rühl W, S P Khastgir, Sogo K, Stanley R, Sukhatme U, Ujino H, Ujino H, Ujino H, Ujino H, Ujino H, Wojciechowski S, Wolfes J   +79 more
core   +3 more sources

Physical insights from the aspect ratio dependence of turbulence in negative triangularity plasmas [PDF]

Plasma Physics and Controlled Fusion
In this work, we study the impact of aspect ratio A=R0/r (the ratio of major radius R 0 to minor radius r) on the confinement benefits of negative triangularity (NT) plasma shaping. We use high-fidelity flux tube gyrokinetic GENE simulations and consider
A. Balestri, J. Ball, S. Coda, D. Cruz-Zabala, M. García-Muñoz, E. Viezzer   +5 more
semanticscholar   +1 more source

Overview of initial negative triangularity plasma studies on the ASDEX Upgrade tokamak

Nuclear Fusion, 2022
An overview of results of negative triangularity (NT) studies from the ASDEX Upgrade tokamak (AUG) is given. Moderate values of the triangularity in the range of δ _average ≈ −0.2 have been obtained.
T. Happel, T. Pütterich, D. Told, M. Dunne, R. Fischer, J. Hobirk, R.M. McDermott, U. Plank, ASDEX Upgrade Team the   +8 more
doaj   +1 more source

Constraining models of initial conditions with elliptic and triangular flow data [PDF]

, 2014
We carry out a combined analysis of elliptic and triangular flow data using viscous relativistic hydrodynamics. We show that these data allow to put tight constraints on models of the early dynamics of a nucleus-nucleus collision.
Luzum, Matthew, Ollitrault, Jean-Yves, Retinskaya, Ekaterina   +2 more
core   +4 more sources

H-mode grade confinement in L-mode edge plasmas at negative triangularity on DIII-D

Physics of Plasmas, 2019
A. Marinoni, M. E. Austin, A.W. Hyatt, M.L. Walker, J. Candy, C. Chrystal, C.J. Lasnier, G. R. McKee, T. Odstrčil, C. C. Petty, M. Porkoláb, J. C. Rost, O. Sauter, S. P. Smith, G. M. Staebler, C. Sung, K. E. Thome, A. D. Turnbull, L. Zeng, DIII-D Team   +19 more
openalex   +4 more sources

Measures with zeros in the inverse of their moment matrix

, 2008
We investigate and discuss when the inverse of a multivariate truncated moment matrix of a measure $\mu$ has zeros in some prescribed entries. We describe precisely which pattern of these zeroes corresponds to independence, namely, the measure having a ...
Helton, J. William, Lasserre, Jean B., Putinar, Mihai   +2 more
core   +2 more sources

Triangularity and Dipole Asymmetry in Heavy Ion Collisions

, 2010
We introduce a cumulant expansion to parameterize possible initial conditions in relativistic heavy ion collisions. We show that the cumulant expansion converges and that it can systematically reproduce the results of Glauber type initial conditions.
Teaney, Derek, Yan, Li
core   +1 more source

Standard triangularization of semigroups of non-negative operators

Journal of Functional Analysis, 2005
A semigroup \({\mathcal S}\) of operators \(S\in{\mathcal B}({\mathcal X})_+\), preserving non-negative functions (\(S{\mathcal X}_+\subset{\mathcal X}_+\)), on a Banach lattice \({\mathcal X}=L^p(X,\mu )\), \(1\leq ...
MacDonald, Gordon, Radjavi, Heydar
openaire   +2 more sources

Dynamical vs geometric anisotropy in relativistic heavy-ion collisions: which one prevails?

, 2017
We study the influence of geometric and dynamical anisotropies on the development of flow harmonics and, simultaneously, on the second- and third-order oscillations of femtoscopy radii. The analysis is done within the Monte Carlo event generator HYDJET++,
Bravina, L. V., Lokhtin, I. P., Malinina, L. V., Petrushanko, S. V., Snigirev, A. M., Zabrodin, E. E.   +5 more
core   +1 more source