Mathematics — first biennium · Lesson
A relation is a set of ordered pairs. Reading a pair means respecting the direction first element → second element.
Prerequisites: Cartesian product
Goal: Read a relation as a set of ordered pairs and move between simple representations.
In this lesson: Read a relation as a set of ordered pairs and move between simple representations.
New concept: A relation from A to B is a set of ordered pairs selected from A×B. Saying that a is related to b means that the pair (a,b) belongs to the relation.
How to proceed: Do not read the pair as a set: position and direction are part of the information.
You can already assume: Cartesian product.
Completed exercises: 0/5 · Correct on first attempt: 0
Do not read the pair as a set: position and direction are part of the information.
Data / situation: R={(0,x),(1,y),(2,z)}
ConceptStep separates what is required from what is recommended or useful as reinforcement. Only required prerequisites block your progress.
Relationships: solid line = required · dashed line = recommended · dotted line = reinforcement.