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watahoo
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5 votes
1 answer
565 views

Does the Hamiltonian formalism yield more Noether charges than the Lagrangian formalism?

4 votes
0 answers
438 views

An example of symplectomorphism that is not a canonical transformation

2 votes
0 answers
126 views

Ambiguity of Lagrangian density in field theory [duplicate]

1 vote
0 answers
56 views

On the proof of the Bertrand theorem

1 vote
3 answers
100 views

Can (extended) canonical transformation involve change of time?

1 vote
0 answers
138 views

Any concrete example of symplectomorphism that is not a canonical transformation? [duplicate]

0 votes
1 answer
111 views

How can we design the global structure of the phase space?

0 votes
0 answers
48 views

Is there a Lorentz invariant action for a free multi-particle system?