Each of the first three calling sequences, Remove( M, x, n ), Remove( M, x=n ), and Remove( M, [x, n ] ), reduces the multiplicity of x in the MultiSet M by n.

The fourth calling sequence, Remove( M, x ), removes all occurrences of x from M.

The new multiplicity of x in M is returned.

$M≔\mathrm{MultiSet}\left(a=2\,b=5\,c=4\right)$

$M≔\left\{\left[a\,2\right]\,\left[b\,5\right]\,\left[c\,4\right]\right\}$

$\mathrm{Remove}\left(M\,b\,3\right)$

$2$

$M$

$\left\{\left[a\,2\right]\,\left[b\,2\right]\,\left[c\,4\right]\right\}$

$\mathrm{Remove}\left(M\,b=2\right)$

$0$

$M$

$\left\{\left[a\,2\right]\,\left[c\,4\right]\right\}$

$\mathrm{Remove}\left(M\,c\right)$

$0$

$M$

$\left\{\left[a\,2\right]\right\}$

The MultiSet/Remove command was introduced in Maple 2016.

For more information on Maple 2016 changes, see Updates in Maple 2016.