differential operator(redirected from First-order differential operator)
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differential operator[‚dif·ə′ren·chəl ′äp·ə‚rād·ər]
An operator on a space of functions which maps a function ƒ into a linear combination of higher-order derivatives of ƒ.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.