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2. Surjective function - Wikipedia

   en.wikipedia.org/wiki/Surjective_function

   In mathematics, a surjective function (also known as surjection, or onto function / ˈ ɒ n. t uː /) is a function f such that, for every element y of the function's codomain, there exists at least one element x in the function's domain such that f(x) = y.

3. History of mathematical notation - Wikipedia

   en.wikipedia.org/wiki/History_of_mathematical...

   The peoples with whom the Greeks of Asia Minor (amongst whom notation in western history begins) were likely to have come into frequent contact were those inhabiting the eastern littoral of the Mediterranean: and Greek tradition uniformly assigned the special development of geometry to the Egyptians, and that of the science of numbers either to ...

4. Bijection, injection and surjection - Wikipedia

   en.wikipedia.org/wiki/Bijection,_injection_and...

   Let : be with codomain restricted to its image, and let : be the inclusion map from () into . Then f = i ∘ f R {\displaystyle f=i\circ f_{R}} . A dual factorization is given for surjections below.

5. Function (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Function_(mathematics)

   As a word of caution, "a one-to-one function" is one that is injective, while a "one-to-one correspondence" refers to a bijective function. Also, the statement "f maps X onto Y" differs from "f maps X into B", in that the former implies that f is surjective, while the latter makes no assertion about the nature of f. In a complicated reasoning ...

6. Mathematics - Wikipedia

   en.wikipedia.org/wiki/Mathematics

   Some students studying math may develop an apprehension or fear about their performance in the subject. This is known as math anxiety or math phobia, and is considered the most prominent of the disorders impacting academic performance. Math anxiety can develop due to various factors such as parental and teacher attitudes, social stereotypes ...

7. Mathematical notation - Wikipedia

   en.wikipedia.org/wiki/Mathematical_notation

   Mathematical notation consists of using symbols for representing operations, unspecified numbers, relations, and any other mathematical objects and assembling them into expressions and formulas. Mathematical notation is widely used in mathematics , science , and engineering for representing complex concepts and properties in a concise ...