c/memes · by weird@sub.wetshaving.social · 1y

Number sets

217 points · 6 comments · view on lemmy.world

6 Comments

tisktisk@piefed.social · 19 pts · 1y (5 replies)

Let n be natural? What am I missing imma dropout ffs

Yes, this reads as either "let n be an element of the natural numbers" or more simply "let n be natural"

Let n be an image of Arnold Schwarzenegger in the wilderness surrounded by animals with social media icons overlayed because someone was too lazy to spend 10 seconds finding a clean copy of the image.

Jessica@discuss.tchncs.de · 0 pts · 1y (2 replies)

I think it's let n contain the set of all natural numbers?

Lucien@mander.xyz · 4 pts · 1y (1 reply)

No, that symbol means "element of"

∈

Denotes set membership, and is read "is in", "belongs to", or "is a member of". That is, x ∈ S means that x is an element of the set S.

https://en.wikipedia.org/wiki/Glossary_of_mathematical_symbols

Jessica@discuss.tchncs.de · 2 pts · 1y

Good thing I already passed whatever math class used that symbol and got my degree! 😅