New posts in functions

what is the difference between functor and function?

functions elementary-set-theory terminology category-theory

prove $x \mapsto x^2$ is continuous

functions proof-writing continuity

What is the set-theoretic definition of a function?

functions elementary-set-theory axiom-of-choice

Counting the Number of Closed Binary Operations That Are Commutative

combinatorics functions

Prove that the expression is a perfect square

algebra-precalculus elementary-number-theory functions

A composite function problem

functions

Is there a function whose inverse is exactly the reciprocal of the function, that is $f^{-1} = \frac{1}{f}$?

real-analysis functions

Notation for repeated application of function

functions notation

What is the derivative of: $f(x)=x^{2x^{3x^{4x^{5x^{6x^{7x^{.{^{.^{.}}}}}}}}}}$?

calculus functions derivatives power-towers

$f(a)+f(-b)=0$ implies $f(-a)+f(b)=0$. Then $f$ is an odd function?

real-analysis functions functional-equations even-and-odd-functions

The domain for the function $A, B ⊆ X$, $A f B \iff A ∪ B=X$ and $A \cap B = ∅$

functions discrete-mathematics elementary-set-theory

Proving that $f=\{(x^n,x): x \in \mathbb{R}\}$ is a function for positive odd integers $n$

functions elementary-set-theory solution-verification

How pathological can a convex function be?

functions convex-analysis

Why does Newton's method work?

calculus functions numerical-methods intuition

Relation between the roots of a function

calculus functions polynomials roots

Is it possible to describe the Collatz function in one formula?

elementary-number-theory functions collatz-conjecture

What is that thing that keeps showing in papers on different fields?

linear-algebra functions graph-theory

About finding the function such that $f(xy)=f(x)f(y)-f(x+y)+1$ [duplicate]

functions functional-equations

Is there an intuitive way of visualising complex roots?

functions complex-numbers roots visualization

Injective and Surjective Functions

functions elementary-set-theory