| block_index | Find independent blocks of equations. | 
| compact | Remove spurious variables and restrictions | 
| echelon | Reduced row echelon form | 
| eliminate | Eliminate a variable from a set of edit rules | 
| is_feasible | Check feasibility of a system of linear (in)equations | 
| is_totally_unimodular | Test for total unimodularity of a matrix. | 
| lintools | Tools for manipulating linear systems of (in)equations | 
| normalize | Bring a system of (in)equalities in a standard form | 
| pinv | Moore-Penrose pseudoinverse | 
| print.sparse_constraints | Generate sparse set of constraints. | 
| project | Project a vector on the border of the region defined by a set of linear (in)equality restrictions. | 
| ranges | Derive variable ranges from linear restrictions | 
| sparseConstraints | Generate sparse set of constraints. | 
| sparse_constraints | Generate sparse set of constraints. | 
| sparse_constraints.data.frame | Generate sparse set of constraints. | 
| sparse_project | Successive projections with sparsely defined restrictions | 
| subst_value | Substitute a value in a system of linear (in)equations |