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Variable elimination (Gaussian elimination, FourierMotzkin elimination), MoorePenrose pseudoinverse, reduction to reduced row echelon form, value substitution, projecting a vector on the convex polytope described by a system of (in)equations, simplify systems by removing spurious columns and rows and collapse implied equalities, test if a matrix is totally unimodular, compute variable ranges implied by linear (in)equalities.
Package details 


Author  Mark van der Loo [aut, cre], Edwin de Jonge [aut] 
Date of publication  20170606 16:05:38 UTC 
Maintainer  Mark van der Loo <mark.vanderloo@gmail.com> 
License  GPL3 
Version  0.1.1.4 
URL  https://github.com/datacleaning/lintools 
Package repository  View on CRAN 
Installation 
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