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:
“Tell my son how anxious I am that he may read and learn his Book, that he may become the possessor of those things that a grateful country has bestowed upon his papa—Tell him that his happiness through life depends upon his procuring an education now; and with it, to imbibe proper moral habits that can entitle him to the possession of them.”
—Andrew Jackson (1767–1845)
“O Julius Caesar, thou art mighty yet!
Thy spirit walks abroad and turns our swords
In our own proper entrails.”
—William Shakespeare (1564–1616)
“In making a speech one must study three points: first, the means of producing persuasion; second, the language; third the proper arrangement of the various parts of the speech.”
—Aristotle (384–323 B.C.)