To implement the multiplication 𝐶 = 𝐹 ⊙ A ∗ B using sparse matrices the F and A matrices are stored in CSC format so that the elements of each row are easier to gather, while the B matrix is stored ...

Mathematicians love a good puzzle. Even something as abstract as multiplying matrices (two-dimensional tables of numbers) can feel like a game when you try to find the most efficient way to do it.