sparse identity matrix
list, Vector, Matrix, or array
full(X) returns a dense Vector, Matrix, or Array corresponding to X.
issparse(X) returns true when X is a Vector, Matrix, or Array with sparse storage and false otherwise.
If n is an integer and m is omitted, the resulting matrix is square.
If the input X is an array, its elements are used as the dimensions of the matrix.
The MTM[full] and MTM[issparse] commands were introduced in Maple 2021.
For more information on Maple 2021 changes, see Updates in Maple 2021.
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