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July 2019

Function of several real variables
function of several real variables or real multivariate function is a function with more than one argument, with all arguments being real variables.
Function of a real variable
sciences, a function of a real variable is a function whose domain is the real numbers ℝ, or a subset of ℝ that contains an interval of positive length
Several complex variables
The theory of functions of several complex variables is the branch of mathematics dealing with complex valued functions f ( z 1 , z 2 , … , z n ) {\displaystyle
Function (mathematics)
equal to the set R {\displaystyle \mathbb {R} } of real numbers, one has a function of several real variables. If the X i {\displaystyle X_{i}} are equal
Differentiable function
In calculus (a branch of mathematics), a differentiable function of one real variable is a function whose derivative exists at each point in its domain
Stationary point
point where the function "stops" increasing or decreasing (hence the name). For a differentiable function of several real variables, a stationary point
Critical point (mathematics)
the function's domain where it is either not holomorphic or the derivative is equal to zero. Likewise, for a function of several real variables, a critical
independent variable. Derivatives may be generalized to functions of several real variables. In this generalization, the derivative is reinterpreted
Implicit function theorem
calculus, the implicit function theorem is a tool that allows relations to be converted to functions of several real variables. It does so by representing
Theta function
mathematics, theta functions are special functions of several complex variables. They are important in many areas, including the theories of Abelian varieties