L^p(μ) = {f : ∫|f|^p dμ < ∞} modulo a.e. equality, with norm ||f||_p = (∫|f|^p)^{1/p}. L² is a Hilbert space (quantum mechanics); L^∞ is the essential-sup norm.
L^p(μ) = {f : ∫|f|^p dμ < ∞} modulo a.e. equality, with norm ||f||_p = (∫|f|^p)^{1/p}. L² is a Hilbert space (quantum mechanics); L^∞ is the essential-sup norm.