Function kron 

pub fn kron<T>(
    a: ArrayView<'_, T, Ix2>,
    b: ArrayView<'_, T, Ix2>,
) -> Array<T, Ix2>
where
    T: Clone + Zero + Mul<Output = T>,

Compute the Kronecker product of two 2D arrays

Arguments

• a - First input array
• b - Second input array

Returns

The Kronecker product of the input arrays

Examples

use ndarray::array;
use scirs2_core::ndarray_ext::matrix::kron;

let a = array![[1, 2], [3, 4]];
let b = array![[0, 5], [6, 7]];

let result = kron(a.view(), b.view());
assert_eq!(result.shape(), &[4, 4]);
assert_eq!(result, array![
    [0, 5, 0, 10],
    [6, 7, 12, 14],
    [0, 15, 0, 20],
    [18, 21, 24, 28]
]);