In this article a special class of Banach manifolds (called QL-manifolds) and mapping between them (QL-mappings) are introduced and some examples are given.
ABBASOV, AKİF (2004) "A Quasi-Linear Manifolds and Quasi-Linear Mapping Between Them," Turkish Journal of Mathematics: Vol. 28: No. 3, Article 1. Available at: https://journals.tubitak.gov.tr/math/vol28/iss3/1