Finish cheatsheet

[Quafadas]

Core Linear Algebra [Plug into lapack]

• Solve linear systems: Ax = b solver (like np.linalg.solve, MATLAB ).
• QR decomposition: orthogonal + upper-triangular factorization.
• LU decomposition: lower/upper triangular factorization with pivoting

Matrix Manipulation

• Concatenation / stacking: horizontal/vertical joins.
• Repeat / tile: replicate arrays.
• Broadcasting semantics: clarify support for implicit expansion.

Randomization

• Random arrays: uniform random initialization.

Specialized Matrix Ops

• Trace: sum of diagonal entries.
• Kronecker product: tensor product of matrices.
• Outer product: vector outer product.