meaning of initiator

1. One who initiates.
2. initiator SCSI initiator injection 1. A function, f : A -> B, is injective or one-one, or is an injection, if and only if for all a,b in A, fa = fb => a = b. I. e. no two different inputs give the same output contrast many-to-one. This is sometimes called an embedding. Only injective functions have left inverses f where ffx = x, since if f were not an injection, there would be elements of B for which the value of f was not unique. If an injective function is also a surjection then is it a bijection. 2. An injection function is one which takes objects of type T and returns objects of type CT where C is some type constructor. An example is f x = x, 0. The opposite of an injection function is a projection function which extracts a component of a constructed object, e. g. fst x,y = x. We say that f injects its argument into the data type and fst projects it out.
3. a person who initiates a course of action

Related Words

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