114 citations
- Technische Universität BraunschweigDE4 papers
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- Applied Mathematics (United States)US1 paper
- Astronomical Institute of the Slovak Academy of SciencesSK1 paper
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9 papers · 1 filter
Lifetimes of states in 19Ne above the 15 O + alpha breakup threshold
S. Mythili, B. Davids, T. K. Alexander +19
The 15O(alpha,gamma)19Ne reaction plays a role in the ignition of Type I x-ray bursts on accreting neutron stars. The lifetimes of states in 19Ne above the 15O + alpha threshold of…
Shannon-McMillan theorems for discrete random fields along curves and lower bounds for surface-order large deviations
Julia Brettschneider
The notion of a surface-order specific entropy h_c(P) of a two-dimensional discrete random field P along a curve c is introduced as the limit of rescaled entropies along lattice ap…
The K-Theory of Toeplitz C*-Algebras of Right-Angled Artin Groups
Nikolay A. Ivanov
To a graph one can associate a C^*-algebra generated by isometries. Such -algebras were studied recently by Crisp and Laca. They are a special case of the Toeplit…
Multiplication of free random variables and the S-transform: the case of vanishing mean
N. Raj Rao, Roland Speicher
This note extends Voiculescu's S-transform based analytical machinery for free multiplicative convolution to the case where the mean of the probability measures vanishes. We show t…
A Bayesian approach to the estimation of maps between riemannian manifolds
Leo T. Butler, Boris Levit
Let Θbe a smooth compact oriented manifold without boundary, embedded in a euclidean space and let γbe a smooth map Θinto a riemannian manifold Λ. An unknown state θ\in Θis observe…
Operator-valued semicircular elements: Solving a quadratic matrix equation with positivity constraints
J. William Helton, Reza Rashidi Far, Roland Speicher
We show that the quadratic matrix equation , for given with positive real part and given analytic mapping with some positivity preserving properties, has ex…