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The term R-matrix has several meanings, depending on the field of study.. The term R-matrix is used in connection with the Yang–Baxter equation, first introduced in the field of statistical mechanics in the works of J. B. McGuire in 1964 [1] and C. N. Yang in 1967 [2] and in the group algebra [] of the symmetric group in the work of A. A. Jucys in 1966.
The Yoshimine sort [1] is an algorithm that is used in quantum chemistry to order lists of two electron repulsion integrals. It is implemented in the IBM Alchemy program suite [2] and in the UK R-matrix package for electron and positron scattering by molecules [3] which is based on the early versions of the IBM Alchemy program suite.
The program has parallel processing built-in via links to parallel environments in R, and in general takes advantage of the R programming environment. Users can expand the package with functions. These have been used, for instance, to implement Modification indices. Models can be written in either a "pathic" or "matrix" form.
R is a widely used system with a focus on data manipulation and statistics which implements the S language. [29] Many add-on packages are available (free software, GNU GPL license). SAS, [30] a system of software products for statistics. It includes SAS/IML, [31] a matrix programming language.
R is a programming language for statistical computing and data visualization. It has been adopted in the fields of data mining, bioinformatics and data analysis. [9] The core R language is augmented by a large number of extension packages, containing reusable code, documentation, and sample data. R software is open-source and free software.
DORAL, Fla. — Speaker Mike Johnson (R-La.) in a Tuesday interview with The Hill’s Emily Brooks floated the possibility of working with Democrats to raise the debt ceiling instead of including ...
R package for phylogenetic assembly R, two‐stage Bayesian inference using MrBayes 3.2 Thomas et al. 2013 [29] PAUP* Phylogenetic analysis using parsimony (*and other methods) Maximum parsimony, distance matrix, maximum likelihood: D. Swofford phangorn [30] Phylogenetic analysis in R: ML, MP, distance matrix, bootstrap, phylogentic networks ...
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