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Lagrangian may refer to:
- Lagrangian, relating to Joseph-Louis Lagrange (1736–1813), Italian mathematician and astronomer
- Lagrangian function, used to solve constrained minimization problems in optimization theory; see Lagrange multiplier
- Lagrangian, a functional whose extrema are to be determined in the calculus of variations
- Lagrangian submanifold, a class of submanifolds in symplectic geometry
- Lagrangian system, a pair consisting of a smooth fiber bundle and a Lagrangian density
- Lagrangian mechanics, a reformulation of classical mechanics
- Lagrangian (field theory), a formalism in classical field theory
- Lagrangian point, a position in an orbital configuration of two large bodies
- Lagrangian coordinates, a way of describing the motions of particles of a solid or fluid in continuum mechanics
|This disambiguation page lists mathematics articles associated with the same title.
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