Iterative Methods for Solving Linear System of Equations

Given a symmetric positive definite matrix Q and a non-singular matrix L, find symmetric positive definite solution X such that X = Q + L (X inv) L^T.
Reference: Benner, P., Faßbender, H. On the Solution of the Rational Matrix Equation.
Benner, Faßbender (2007) <doi:10.1155/2007/21850>.

Solver Suite for Alkalinity-PH Equations
c(person("Jean-Marie", "Epitalon", role = c("aut", "cre", "cph"), email = "jean-marie.epitalon@orange.fr"),
person("Jean-Pierre", "Gattuso", role = c("cph"), email = "gattuso@obs-vlfr.fr"),
person("Guy", "Munhoven", role = "aut", email = "Guy.Munhoven@ulg.ac.be")
)
Universal and robust algorithm for solving the total alkalinity-pH equation presented in G. Munhoven (2013) <doi:10.5194/gmd-6-1367-2013> and G. Munhoven (2021) <doi:10.5194/gmd-2020-447>. The total alkalinity-pH equation relates total alkalinity and pH for a given set of acid-base concentrations in a given water sample, among which carbonic acid. This package is particularly useful in marine chemistry involving dissolved inorganic carbon. Original package in Fortran can be found at <doi:10.5281/zenodo.4328965>.
Jean-Marie Epitalon [aut, cre, cph],
Jean-Pierre Gattuso [cph],
Guy Munhoven [aut]

An Individual-Based Model of Bird Song Evolution
c(
person("Raymond", "Danner", email = "dannerR@uncw.edu", role = c("aut", "cre")),
person("Elizabeth", "Derryberry", role = "aut"),
person("Graham", "Derryberry", role = "aut"),
person("Julie", "Danner", role = "aut"),
person("David", "Luther", role = "aut"))
Simulates the cultural evolution of quantitative traits of bird song. 'SongEvo' is an individual- (agent-) based model. 'SongEvo' is spatially-explicit and can be parameterized with, and tested against, measured song data. Functions are available for model implementation, sensitivity analyses, parameter optimization, model validation, and hypothesis testing.
Raymond Danner [aut, cre],
Elizabeth Derryberry [aut],
Graham Derryberry [aut],
Julie Danner [aut],
David Luther [aut]