I am doing IGCSE rcfereform.orgs, and also am having actually a couple of troubles via function notation. I understand also the develop f(x).

You watching: What does an arrow mean in math

What does the create f: x ↦ y mean? Could you likewise offer one or 2 examples?

And, if possible, state your source. Thank you.


It suggests that $f$ is a role that takes the worth $x$ to the value $y$. For circumstances, $$f: xmapsto x^2$$ is an different way of creating $f(x) = x^2$.


$f:x mapsto y$ suggests that $f$ is a role which takes in a value $x$ and provides out $y$.

But,$f: cfereform.orgbbN o cfereform.orgbbN$ suggests that $f$ is a duty which takes a natural number as domain and outcomes in a organic number as the result.



As it is evident from rcfereform.org notation — the symbol $mapsto$ reads as "maps to".This is backed up by Wikipedia article on functions:

... the notation $mapsto$ ("maps to", an arrowhead with a bar at its tail) ...

See more: I'M Pansexual, And Here'S What Does Pansexual Mean Yahoo

Tbelow is an additional arrow-symbol, which also supplied for mapping $ ightarrow$, which could be a little bit confusing.The difference between 2 (as it is pointed out in the connected answer, as well as in the answer by rcfereform.orgEnthusiast):

$mapsto$ maps an element of one set to an element of another set;$ ightarrow$ maps a collection to a set.

Example (borrowed from here):

$$f:R ightarrow R$$$$x mapsto x^2$$

It suggests that: under $f$, any kind of element $x subcollection R$ gets mapped to the aspect $x∗x=x^2$ (which is also an element of $R$).

edited Mar 28 "18 at 6:17
answered Mar 28 "18 at 6:11
Add a comment |

Your Answer

Thanks for contributing an answer to rcfereform.orgematics Stack Exchange!

Please be sure to answer the question. Provide details and share your research!

But avoid

Asking for aid, clarification, or responding to various other answers.Making statements based on opinion; back them up via referrals or personal endure.

Use rcfereform.orgJax to format equations. rcfereform.orgJax reference.

To learn more, view our tips on creating great answers.

Draft saved
Draft discarded

Sign up or log in

Sign up making use of Google
Sign up making use of Facebook
Sign up utilizing Email and also Password

Message as a guest

Email Required, yet never shown

Message as a guest


Required, but never before shown

Article Your Answer Discard

By clicking “Message Your Answer”, you agree to our regards to service, privacy plan and cookie plan

Not the answer you're looking for? Browse other concerns tagged functions notation or ask your very own question.

Featured on Meta
Different arrows in set theory: $ ightarrow$ and also $mapsto$
How to pronounce “$mapsto$”, as in “$xmapsto f(x)$”?
Difference of mapsto and right arrow
What does $H=hmid h:X ightarrow Y$ mean?
What does this notation mean? F|U
What does the notation $fcolon A o B$ mean?
Notation: What does this summation mean?
What is a function?
Notation definition $ X imes <0, M>$ and also $Y imes $
What Does the Following Notation Median
What does “$ imes$” suppose when specifying the domain of a function?
Projective Geomeattempt - What does the double slash notation intend in this proof?
Hot Netoccupational Questions more warm questions

Question feed
Subscribe to RSS
Concern feed To subscribe to this RSS feed, copy and also paste this URL right into your RSS reader.


Company kind of
Stack Exadjust Netoccupational
site style / logo design © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. rev2021.8.26.40077

rcfereform.orgematics Stack Exadjust works ideal via JavaScript allowed

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can keep cookies on your device and discshed indevelopment in accordance via our Cookie Policy.