Green function might refer to:
- Green's function of a differential operator.
- Deligne–Lusztig theory (Green function) in the representation theory of finite groups of Lie type.
- Green's function in many-body theory.
Famous quotes containing the words green and/or function:
“The old priest Peter Gilligan
Was weary night and day;
For half his flock were in their beds,
Or under green sods lay.”
—William Butler Yeats (1865–1939)
“Uses are always much broader than functions, and usually far less contentious. The word function carries overtones of purpose and propriety, of concern with why something was developed rather than with how it has actually been found useful. The function of automobiles is to transport people and objects, but they are used for a variety of other purposes—as homes, offices, bedrooms, henhouses, jetties, breakwaters, even offensive weapons.”
—Frank Smith (b. 1928)