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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?

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🖼️ 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
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Range of a function
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