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# Bijections

Bijections, surjections, and injections are three types of functions which associate the elements between two sets. For example, each word in this sentence can be mapped to exactly one in the last.

**Note:** All cuts must be distinct straight lines from one point on the edge of the pizza to another point on the edge of the pizza.

**Note:** All cuts must be distinct straight lines from one point on the edge of the pizza to another point on the edge of the pizza.

**Note:** All cuts must be distinct straight lines from one point on the edge of the pizza to another point on the edge of the pizza.

**Note:** All cuts must be distinct straight lines from one point on the edge of the pizza to another point on the edge of the pizza.

**Note:** All cuts must be distinct straight lines from one point on the edge of the pizza to another point on the edge of the pizza.

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