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April 2020

Domain of a function
mathematics, the domain of definition (or simply the domain) of a function is the set of all "input" or argument values for which the function is defined.
Function (mathematics)
of a set X, the domain of the function, to a single element y of another set Y (possibly the same set), the codomain of the function. If the function
Domain of unknown function
A domain of unknown function (DUF) is a protein domain that has no characterised function. These families have been collected together in the Pfam database
Surjective function
the fact that the image of the domain of a surjective function completely covers the function's codomain. Any function induces a surjection by restricting
Partial function
is called a total function for emphasizing that its domain is not a proper subset of X. Partial functions are often used when the exact domain, X, is not
Convex function
always nonnegative on its entire domain, then the function is convex. In fact, if a twice-differentiable function of a single variable is convex, then
Injective function
injective function (also known as injection, or one-to-one function) is a function that maps distinct elements of its domain to distinct elements of its codomain
Differentiable function
calculus (a branch of mathematics), a differentiable function of one real variable is a function whose derivative exists at each point in its domain. As a result
Argument of a function
to have a domain consisting of ordered pairs or tuples of argument values. The argument of a circular function is an angle. The argument of a hyperbolic
Function of several real variables
The domain of a function of n variables is the subset of ℝn for which the function is defined. As usual, the domain of a function of several real variables