injektiivsed
Injektiivsed is the Estonian term used to describe injective or one-to-one mappings. A function f: A → B is injektiivne if different inputs map to different outputs: for all x1, x2 in A, f(x1) = f(x2) implies x1 = x2. Equivalently, if x1 ≠ x2 then f(x1) ≠ f(x2).
Examples help illustrate the concept. The function f(x) = 2x from the real numbers to the real numbers
In relation to other properties, a function can be injective without being surjective; surjectivity means the
In finite settings, an injective function from A to B satisfies |A| ≤ |B|. If |A| = |B|, then
In broader mathematics and computer science, injektiivsed functions are used to model processes that preserve distinctness