𝕐: What Comes After 𝕏?

l3ycle , 2 months ago

\mathbb{} ultras

OpenStars , 2 months ago

A related article that I found so interesting I could barely put it down, and helped convince me to leave Reddit and come here instead: medium.com/…/the-cargo-cult-of-the-ennui-engine-8….

TheFonz , 2 months ago

Shouldn’t it be sans serif though? Low effort.

TootSweet , 2 months ago

If ℕ is natural numbers and ℚ is rational numbers and ℤ is integers and ℝ is the rational numbers, what are 𝕏 and 𝕐?

palordrolap , 2 months ago (edited 2 months ago)

Not aware of any specific usages, but maybe they're used as meta-sets. e.g. "consider a set of numbers 𝕏 and a set of numbers 𝕐 ... etc, which can't be done with the defined letters.

Unicode originally only had the double-struck letters for the defined sets ℂ, ℍ, ℕ, ℙ, ℚ, ℝ and ℤ, but the full alphabets were later added at higher code-points with "reserved" gaps where the defined seven letters would otherwise appear.

(Complex, Hamiltonian quaternions, Natural, Prime, Quotient (rational), Real and Zahlen, a German word for counting numbers, for anyone wondering.

Quick edit: Zahl is cognate with English "tell" and "tale" which are both related to "tally", believe it or not. "Recounting a tale" didn't used to mean telling(!) a story, but instead literally checking a previous count, and developed the wider sense later.

Also, ℍ not getting "ℚ" because ℚ couldn't have "ℝ" is kind of funny.).

MrJameGumb , 2 months ago

So… Do you care to explain further or should we just sign up based on this static image you posted?

XopherH OP , 2 months ago

My bad. Have restored the link.

SnotFlickerman , 2 months ago

Your link is just to a picture, not to an article.

AbidanYre , 2 months ago

It is concise though. You gotta give him that.

XopherH OP , 2 months ago

My bad. Still getting Lemmy down.