§6, p. 354 — the disjoint case: ‖f‖² = ‖f₁‖₁² + ‖f₂‖₂², and F₁, F₂ complementary closed subspaces

Initializing...

§6, p. 354 — the disjoint case: ‖f‖² = ‖f₁‖₁² + ‖f₂‖₂², and F₁, F₂ complementary closed subspaces · Prove2Me