характеристический класс Obstructions to Embedding of Matrix Algebra Bundles into a Trivial One Authors: Ershov A. V. Topological obstructions to embedding of an Mk(C)-bundle into a trivial Mkl(C)-bundle under the condition (k, l) = 1 are studied. The relation of this problem to the theory of bundles with a structure groupoid is described. Read more about Obstructions to Embedding of Matrix Algebra Bundles into a Trivial One
