SimPEG.utils.kron3

SimPEG.utils.kron3(A, B, C)

Compute kronecker products between 3 sparse matricies.

Where $\otimes$ denotes the Kronecker product and A, B and C are sparse matrices, this function outputs $(A\otimes B)\otimes C$.

Parameters

A, B, Cscipy.sparse.spmatrix

Sparse matrices.

Returns

scipy.sparse.csr_matrix

Kroneker between the 3 sparse matrices.