Unbounded generalization of the Baker-Campbell-Hausdorff formulae
Functional Analysis
2026-04-10 v2 Mathematical Physics
math.MP
Abstract
Based on the operator representation on the module over Banach algebra , the Campbell-Baker-Hausdorff formula is generalized to the unbounded situations. In conclusion, by means of the logarithmic representation of generally-unbounded operators, the Campbell-Baker-Hausdorff formula is generalized to be applicable to the unbounded operators.
Keywords
Cite
@article{arxiv.2203.00378,
title = {Unbounded generalization of the Baker-Campbell-Hausdorff formulae},
author = {Yoritaka Iwata},
journal= {arXiv preprint arXiv:2203.00378},
year = {2026}
}