Matrix multiplication, orthonormal basis, triangular matrix, gradient descent, integrals, Lebesgue mesure, convex, and the mathematical notation in the paper ar

Matrix multiplication, orthonormal basis, triangular matrix, gradient descent, integrals, Lebesgue mesure, convex, and the mathematical notation in the paper are not harder than the code shown here. It is better to have solid prof of what you are doing is sound and will converge before jumping into the code.