Back to Discover
🔢

Bijection, injection and surjection

math Maturity 11-13

We can pair things up.

Bijection.svg
Bijection.svg
You can match one toy to one friend. Sometimes a friend gets two toys. Sometimes a toy has no friend. We use math to see how they match. It helps us count. Can you match your socks?

43 words
🖼️ Images & Media (7)
File:Bijection.svg
Bijection.svg
File:Injection.svg
Injection.svg
File:Surjection.svg
Surjection.svg
File:Total function 2.svg
Total function 2.svg
File:Injective composition.svg
Injective composition.svg
File:Surjective composition.svg
Surjective composition.svg
File:Bijective composition.svg
Bijective composition.svg
Up Next
🔢
Range of a function
Math
→
More to explore

✨ What else?

Related topics you might enjoy

Range of a function 0% Surjective function 0% Injective function 0% Inverse function 0% Domain of a function 0% Graph of a function 0%

🔬 Go deeper

More advanced topics to explore

Function (mathematics) Subset Partial function Transformation (function)

🪜 Step back

Simpler topics to build understanding

Range of a function Surjective function Injective function Inverse function
📚 Content adapted from Wikipedia | Readability: FK 12.6 | Vital Level 5