Fano plane

Rarity: Common

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At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

In finite geometry, the Fano plane (named after Gino Fano) is a finite projective plane with the smallest possible number of points and lines: 7 points and 7 lines, with 3 points on every line and 3 lines through every point.

Excerpt from the Wikipedia article “Fano plane”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: someone on the internet, Public domain, via Wikimedia Commons.