Proper may refer to:
- Proper (liturgy), the part of a Christian liturgy that is specific to the date within the Liturgical Year
- Proper frame, such system of reference in which object is stationary (non moving), sometimes also called a co-moving frame
- Proper (heraldry), in heraldry, means depicted in natural colors
- Proper or appropriate conduct
- Proper (often capitalized PROPER), a corrected release in response to a previously released online video or movie that contains transcoding or other playback errors.
In mathematics:
- Proper map, in topology, a property of continuous function between topological spaces, if inverse images of compact subsets are compact
- Proper morphism, in algebraic geometry, an analogue of a proper map for algebraic varieties
- Proper transfer function, a transfer function in control theory in which the degree of the numerator does not exceed the degree of the denominator
- Proper equilibrium, in game theory, a refinement of the Nash equilibrium.
- Proper subset
- Proper space
Famous quotes containing the word proper:
“To write anything tolerable, the mind must be in a natural, proper disposition; provocatives, in that case, as well as in another, will only produce miserable, abortive performances.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)
“With proper attribution, to quote another’s thoughts and words is appropriate; plagiarism, however, is cheating, and it may break copyright law as well.”
—Kenneth G. Wilson (1923)
“The Creator has not thought proper to mark those in the forehead who are of stuff to make good generals. We are first, therefore, to seek them blindfold, and then let them learn the trade at the expense of great losses.”
—Thomas Jefferson (1743–1826)