Open set

How can we understand closeness without measuring distance?

Open set

How can we understand closeness without measuring distance?

Imagine you're at a park with scattered benches. You want to find a bench that's not too far from your current spot.

Think of the park as a space where you can group benches based on how close they are to each other, without needing to measure the exact distance. This grouping is what mathematicians call a "topology."

Example

You group benches that are within 10 meters of each other as "close enough," even though the park is vast.

Remember this

A topology groups elements based on closeness, not distance.

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