Algebras with Operator and Campbell--Hausdorff Formula
arXiv:hep-th/9408070 · doi:10.1007/BF00739153
Abstract
We introduce some new classes of algebras and estabilish in these algebras Campbell--Hausdorff like formula. We describe the application of these constructions to the problem of the connectivity of the Feynman graphs corresponding to the Green functions in Quantum Fields Theory.
12 pages