Symbols:Abbreviations/R
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R
RHS
In an equation:
- $\text {Expression $1$} = \text {Expression $2$}$
the term $\text {Expression $2$}$ is the right hand side.
RHS
Reduced Echelon Form
ref is an abbreviation for reduced echelon form.
rref is an abbreviation for reduced row echelon form.
The matrix $\mathbf A$ is in reduced echelon form if and only if, in addition to being in echelon form, the leading $1$ in any non-zero row is the only non-zero element in the column in which that $1$ occurs.
Such a matrix is called a reduced echelon matrix.