Lagrange's identity (disambiguation)

Lagrange's identity may refer to:

• Lagrange's identity, an algebraic identity
• Lagrange's identity (boundary value problem), an identity in calculus
• Lagrange's trigonometric identities, two trigonometric identities
• Lagrange's four-square theorem, a theorem from number theory
• Lagrange polynomial for theorems relating to numerical interpolation
• Euler–Lagrange equation of variational mechanics

This disambiguation page lists mathematics articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.