A characteristic of something that makes it different from something else.
The result of a subtraction; sometimes the absolute value of this result.
A disagreement or argument.
An addition to a coat of arms to distinguish two people's bearings which would otherwise be the same. See augmentation and cadency.
The quality of being different.
The quality or attribute which is added to those of the genus to constitute a species; a differentia.
The set of elements that are in one set but not another ( scriptstyle A◌̅B).
Significant change in or effect on a situation or state.
A Boolean operation which is true when the two input variables are different but is otherwise false; the XOR operation ( scriptstyle A◌̅B+◌̅AB).
A characteristic of a person, group or company etc., style, manner of dress, how one is or wishes to be perceived by others.
A statue or idol.
What a function maps to.
A file that contains all information needed to produce a live working copy. (See disk image and image copy.)
A form of interference: a weaker "copy" of a strong signal that occurs at a different frequency.
The subset of a codomain comprising those elements that are images of something.
A mental picture of something not real or not present.
An optical or other representation of a real object; a graphic; a picture.
To create an image of.
To create a complete backup copy of a file system or other entity.
To represent by an image or symbol; to portray.
To reflect, mirror.