Path Integral

Path integral may refer to:

  • Line integral, the integral of a function along a curve
  • Functional integration, the integral of a functional over a space of curves
  • Path integral formulation of quantum mechanics using functional integration, due to Richard Feynman

Famous quotes containing the words path and/or integral:

    “I notice well that one stray step from the habitual path leads irresistibly into a new direction. Life moves forward, it never reverses its course.”
    —Franz Grillparzer (1791–1872)

    “An island always pleases my imagination, even the smallest, as a small continent and integral portion of the globe. I have a fancy for building my hut on one. Even a bare, grassy isle, which I can see entirely over at a glance, has some undefined and mysterious charm for me.”
    —Henry David Thoreau (1817–1862)