TY - JOUR AB - We study direct integrals of quadratic and Dirichlet forms. We show that each quasi-regular Dirichlet space over a probability space admits a unique representation as a direct integral of irreducible Dirichlet spaces, quasi-regular for the same underlying topology. The same holds for each quasi-regular strongly local Dirichlet space over a metrizable Luzin σ-finite Radon measure space, and admitting carré du champ operator. In this case, the representation is only projectively unique. AU - Dello Schiavo, Lorenzo ID - 10145 JF - Potential Analysis SN - 0926-2601 TI - Ergodic decomposition of Dirichlet forms via direct integrals and applications VL - 58 ER -