From April 2nd to April 5th, 2024, works related to the implementation of the new version of the Jagiellonian University Repository system will be carried out. It will not be possible to enter new information into the repository during this time. We apologize for any inconvenience.
All natural bilinear operators transforming pairs of couples of vector fields and 1-forms into couples of vector
fields and 1-forms are found. All natural bilinear operators as above satisfying the Leibniz rule are extracted. All natural
Lie algebra brackets on couples of vector fields and 1-forms are collected.