Closed ideals in some algebras of analytic functions
  We obtain a complete description of closed ideals of the algebra $\mathcal{D}\cap \mathrm{lip}_\alpha},$ $0<\alpha\leq{1/2},$ where $\mathcal{D}$ is the Dirichlet space and $\mathrm{lip}_\alpha}$ is the algebra of analytic functions satisfying the Lipschitz condition of order $\alpha.$ 
Brahim Bouya