Abstract
Purpose: In this paper, the canonical formalism for plane rotation group SO(2) is presented. Methods: The φ-Lagrangian method is applied in order to find a Lagrangian that the Euler-Lagrange equations would correspondingly coincide with the Lie equations. Results: The canonical formalism for plane rotation group SO(2) is presented. The Lagrangian and Hamiltonian are explicitly constructed. Conclusions: We introduce a family of Lagrange functions on the plane rotation group and verify that Euler-Lagrange and Hamilton equations associated to each of these functions must coincide with the Lie equations in the Lie transformation group.
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