Homothetic Vector Field

A homothetic vector field (sometimes homothetic collineation or homothety) is a projective vector field which satisfies the condition:

where c is a real constant. Homothetic vector fields find application in the study of singularities in general relativity.

Famous quotes containing the word field:

    Love to chawnk green apples an’ go swimmin’ in the
    lake.—
    Hate to take the castor-ile they give for belly-ache!
    ‘Most all the time, the whole year round, there ain’t no flies on
    me,
    But jest ‘fore Christmas I’m as good as I kin be!
    —Eugene Field (1850–1895)