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:
“Photography does not create eternity, as art does; it embalms time, rescuing it simply from its proper corruption.”
—André Bazin (1918–1958)
“If a man wishes to become a hero, then the serpent must first become a dragon: otherwise he lacks his proper enemy.”
—Friedrich Nietzsche (1844–1900)
“We should have an army so organized and so officered as to be capable in time of emergency, in cooperation with the National Militia, and under the provision of a proper national volunteer law, rapidly to expand into a force sufficient to resist all probable invasion from abroad and to furnish a respectable expeditionary force if necessary in the maintenance of our traditional American policy which bears the name of President Monroe.”
—William Howard Taft (1857–1930)