# be+proper+for

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**Proper orbital elements**— The proper orbital elements of an orbit are constants of motion of an object in space that remain practically unchanged over an astronomically long timescale. The term is usually used to describe the three quantities: * proper semimajor axis ( ap …42

**Proper adjective**— In English usage, a proper adjective is an adjective that takes an initial capital letter. A common adjective is an adjective that is not a proper adjective. The term is used informally only; it is not used by grammarians or linguists. Contents 1 …43

**Proper map**— In mathematics, a continuous function between topological spaces is called proper if inverse images of compact subsets are compact. In algebraic geometry, the analogous concept is called a proper morphism. Definition A function f : X rarr; Y… …44

**Proper forcing axiom**— In the mathematical field of set theory, the proper forcing axiom ( PFA ) is a significant strengthening of Martin s axiom, where forcings with the countable chain condition (ccc) are replaced by proper forcings. Statement A forcing or partially… …45

**Proper length**— In relativistic physics, proper length is an invariant quantity which is the rod distance between spacelike events in a frame of reference in which the events are simultaneous. (Unlike classical mechanics, simultaneity is relative in relativity.… …46

**Proper equilibrium**— Infobox equilibrium name=Proper equilibrium subsetof=Trembling hand perfect equilibrium discoverer=Roger B. MyersonProper equilibrium is a refinement of Nash Equilibrium due to Roger B. Myerson. Proper equilibrium further refines Reinhard Selten… …47

**Proper convex function**— In mathematics, a proper convex function is a convex function f taking values in the extended real number line such that:f(x) < +inftyfor at least one x and :f(x) > inftyfor every x . This definition takes account of the fact that the extended… …48

**proper**— adj., adv., & n. adj. 1 a accurate, correct (in the proper sense of the word; gave him the proper amount). b fit, suitable, right (at the proper time; do it the proper way). 2 decent; respectable, esp. excessively so (not quite proper). 3 (usu.… …49

**proper name**— noun a noun that denotes a particular thing; usually capitalized • Syn: ↑proper noun • Ant: ↑common noun (for: ↑proper noun) • Hypernyms: ↑noun * * * …50

**proper**— properly, adv. properness, n. /prop euhr/, adj. 1. adapted or appropriate to the purpose or circumstances; fit; suitable: the proper time to plant strawberries. 2. conforming to established standards of behavior or manners; correct or decorous: a …