In all these pictures, the empty set is missing (-: . Of course you could argue ... | Hacker News

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		Jaxan 5 months ago \| parent \| context \| favorite \| on: Venn Diagram for 7 Sets In all these pictures, the empty set is missing (-: . Of course you could argue that they’re also missing in Venn diagrams, but it’s common to just point on the outside.

bmm6o 5 months ago | [–]

One example included the empty set, the other did not. It doesn't always make sense to have it.

amelius 5 months ago | [–]

The three lightgray circles in the examples are the empty set.

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