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  • Print publication year: 2019
  • Online publication date: June 2019

8 - Singular Lagrangians and Constraint Theory

from Part III - Dirac–Bergmann Theory of Constraints

Summary

After a review of regular Lagrangians, their Hamiltonian formulation, and the first Noether theorem, there is the exposition of theory of singular Lagrangians and of Dirac–Bergmann theory of first- and second-class constraints. Also, the gauge transformations of field theory and general relativity are analyzed.