Chapter 2 version 2

Chapter 2: Complex Linear Algebra for Quantum Theory — complete step-by-step formula derivations of complex scalars and Euler phase, Dirac bra-ket inner products, Gram-Schmidt orthogonalisation, matrix representations, Hermitian and Unitary operators, the spectral theorem, and tensor products. Grounded in historical context with real-world applications, British English narrative tone, and a call to subscribe for future videos at the end.