2019/05/04 by Alexander Brudnyi, Brudnyi, A. · 1 citation
Mathematics · #Holomorphic and Operator Theory #Analytic and geometric function theory #Algebraic and Geometric Analysis
paper · pdf · doi:10.48550/arxiv.1905.01532
The algebra H^∞(D) of bounded holomorphic functions on D⊂\mathbb C is projective free for a wide class of infinitely connected domains. In particular, for such D every rectangular left-invertible matrix with entries in H^∞(D) can be extended in this class of matrices to an invertible square matrix (the generalization of the corona theorem for H^∞(D)). This follows from a new result on the structure of the maximal ideal space of H^∞(D) asserting that its covering dimension is 2 and the second Čech cohomology group is trivial.