@Override
public Matrix apply(DenseMatrix a, DenseMatrix b) {
Matrix result = a.blank();
for (int i = 0; i < a.rows(); i++) {
for (int j = 0; j < a.columns(); j++) {
result.set(i, j, a.get(i, j) - b.get(i, j));
}
}
return result;
}
