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# Partial eclipse

noun
1.
an eclipse, esp of the sun, in which the body is only partially hidden Compare total eclipse, annular eclipse
partial eclipse
An eclipse in which the part of the surface of a celestial object is obscured. See more at eclipse.

Tagged:

• Partial equivalence relation

(PER) A relation R on a set S where R is symmetric (x R y => y R x) and transitive (x R y R z => x R z) and where there may exist elements in S for which the relation is not defined. A PER is an equivalence relation on the subset for […]

• Partial evaluation

compiler, algorithm (Or “specialisation”) An optimisation technique where the compiler evaluates some subexpressions at compile-time. For example, pow x 0 = 1 pow x n = if even n then pxn2 * pxn2 else x * pow x (n-1) where pxn2 = pow x (n/2) f x = pow x 5 Since n is known […]

• Partial-fraction

noun, Algebra. 1. one of the fractions into which a given fraction can be resolved, the sum of such simpler fractions being equal to the given fraction: Partial fractions of 5/(x2−x) are 5/(x−1) and −5/x. noun 1. (maths) one of a set of fractions into which a more complicated fraction can be resolved

• Partial function

A function which is not defined for all arguments of its input type. E.g. f(x) = 1/x if x /= 0. The opposite of a total function. In denotational semantics, a partial function f : D -> C may be represented as a total function ft : D’ -> lift(C) where D’ is a superset […]

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