because I do not want to enlarge the volume of my text by rewriting of well-known thingsvanhees71 said:Well, if you have an own proof, why do you need a reference?
Then I don't understand what you want to prove.wrobel said:because I do not want to enlarge the volume of my text by rewriting of well-known things
And I have no idea how to employ the Hamilton Jacobi eq. which is local in its nature
I think the existence of the action-angle variables needs to be proved firstHaborix said:Would a textbook with a decent treatment of action-angle variables be enough? I assume the proof is along those lines given the reliance on closed orbits.
A request for a reference is a formal inquiry made by an individual to a previous employer, colleague, or professor asking for their opinion and evaluation of the individual's skills, qualifications, and character.
Employers often request references to gain a better understanding of an individual's work ethic, abilities, and past experiences. References can also provide credibility and support to an individual's job application.
You should ask individuals who have worked closely with you and can speak positively about your skills and character. This can include previous managers, supervisors, colleagues, or professors.
You should make a formal request either in person or through email. Be sure to provide the individual with enough information about the position or opportunity you are applying for, and give them ample time to write the reference.
If you do not have any professional references, you can ask for references from volunteer work, internships, or academic projects. You can also ask for personal references from mentors, coaches, or community leaders who can speak to your character and work ethic.