title: Nonlocal
text: # Nonlocal
  
  Nonlocal may refer to:
  
  * Action at a distance, direct interaction of physical objects that are not in proximity
  * Conjugated system (or nonlocalized bond), in chemistry, a conjugated system is a system of connected p-orbitals with delocalized electrons in compounds with alternating single and multiple bonds, which in general may lower the overall energy of the molecule and increase stability
  * Nonlocal goto, an abstract representation of the control state of a computer program
  * Nonlocal Lagrangian, in field theory, a type of functional ${\mathcal {L}}\phi (x)$ which contains terms which are nonlocal in the fields i.e. which are not polynomials or functions of the fields or their derivatives evaluated at a single point in the space of dynamical parameters (e.g. space-time)
     * Other nonlocal relationships in physics, such as Pippard's nonlocal generalisation of the Londons' equations for superconductivity
  * Non-local means, an algorithm in image processing for image denoising
  * Non-local variable, in programming language theory, a variable that is not defined in the local scope
     * nonlocal, a statement in Python 3 that causes identifiers to refer to their bindings in outer enclosing scopes
  