KroneckerProduct

KroneckerProduct[m1, m2, ...] constructs the Kronecker product of the arrays m_i.

Examples

Kronecker product of two matrices:

KroneckerProduct[{{1, 2}, {3, 4}}, {{0, 1}, {1, 0}}] // MatrixForm

Identity and matrix:

KroneckerProduct[IdentityMatrix[2], {{a, b}, {c, d}}]

Please visit the official Wolfram Language Reference for more details.