hellerTompkins: Determine if a matrix is totally unimodular using Heller and... In lintools: Manipulation of Linear Systems of (in)Equalities

Description

This function is deducorrect internal

Usage

 1 hellerTompkins(A) 

Arguments

 A An object of class matrix in \{-1,0,1\}^{m\times n}. Each column must have exactly 2 nonzero elements. (This is tested by is_totally_unimodular).

Value

TRUE if matrix is unimodular, otherwise FALSE

is_totally_unimodular