Scalar Product and Euclidean SpacesCovers the definition of scalar product, properties, examples, and applications in Euclidean spaces, including the Cauchy-Schwartz inequality.
Principal Axes TheoremExplains the Principal Axes Theorem for symmetric matrices and quadratic forms, showing the existence of orthogonal matrices for diagonalization.
Vector spaces: Hilbert spaceIntroduces vector spaces, bases, and the Hilbert space, highlighting the practical implications of defining a basis in a vector space.