Computation and Applied Mathematics

algorithm approximate M*-controllability approximating ordinary differential approximation schemes artigos averaging projections boundary condition boundary value problems Bramble-Hilbert lemma Brazil C.M. CHEN coefficients Comp computed Conf controllability convergence convex combination defined deg p(A degree conditions denote Dirichlet problem Editora Campus Ltda equaçöes equivalent exists Figure finite element approximations finite element method function gradient implies incompressibility inequality initial data input-output model KAPPEL left hand side Lemma linear program Matemática Aplicada Math Mathematics Navier-Stokes equations non-linearity nonzero Numer O(h^)-superconvergence obtain Optimization ordinary differential equations PALAVRAS-CHAVE paper piecewise bilinear polynomial matrix polynomial vectors p(A pressure Proc proof proper rational Proposition rank P(A Remark representation Rio de Janeiro satisfy scheme of averaging SIAM spline scheme Step sufficiently large superconvergence techniques Theorem 3.3 Xiangtan yeſ zeros of p(A