Unicode Character “𝕏” (U+1D54F) • Hacker News Board

Re: Unicode Character “𝕏” (U+1D54F)

#141

Post by [deleted] » Mon, Jul 24, 2023, 1:18 PM UTC

quietbritishjim wrote: post #121

jjgreen wrote: post #114

Interesting comment on the Register (by Jedit): However, it's also exactly identical to Unicode character 1D54F - because that's all it is. And if you examine the full "X" logo in detail, you'll notice that the scratch in the background doesn't reach the X because all the logo creator did was put U+1D54F in a black square and slap it onto the backdrop. It's the epitome of laziness. https://forums.theregister.com/foru…

> you'll notice that the scratch in the background doesn't reach the X What does this mean? I've tried finding various images of the X logo on news sites and twitter.com itself and I don't see anything resembling a "scratch in the background" but maybe I'm just missing something obvious.

[deleted]

Re: Unicode Character “𝕏” (U+1D54F)

#142

Post by folkrav » Mon, Jul 24, 2023, 1:21 PM UTC

enriquto wrote: post #135

dietrichepp wrote: post #10

This is for math. In Latex, you get these symbols with \mathbb{}. They are most commonly used to represent to represent number sets, like the set of all integers Z (from the German), set of all natural numbers N, set of complex numbers C, set of all real numbers R, rationals Q (for “quotient”), set of quaternions H (named after Hamilton), or an unknown set F (for “field”). This explains why many of the letters in thi…

> This is for math. Heh. The "tabs vs spaces" debate of mathematical typography is whether these symbols should be used at all in printing, or reserved for actual blackboards. In LaTeX you can have actual boldface letters, so you should write a boldface letter R to represent the real numbers and so on. Using "blackboard bold" in print looks terribly off to some (many?) people.

Funny. Coming from a non-math background, having only one symbol to deal with feels less confusing than switching around symbols based on the medium it happens to be written on. Did one of the symbols come "first"?

Re: Unicode Character “𝕏” (U+1D54F)

#143

Post by aequitas » Mon, Jul 24, 2023, 1:26 PM UTC

peyton wrote: post #138

samwillis wrote: post #64

Earlier quoted context omitted.

Trademarks are against a "class", these can be quite wide. They would clearly want to own that exact symbol for "Class 9: Computer and software products and electrical and scientific products." Unicode already contains exactly it, it's a mathematical/scientific symbol, even if they did get the trademark in that category (which I doubt) they will never be able to enforce it. With trade marks, if you don't successfully…

It’s totally enforceable. It’s a trademark. Who else is doing business with the Unicode doublestruck X?

https://nl.wikipedia.org/wiki/X.Org_Server

Re: Unicode Character “𝕏” (U+1D54F)

#144

Post by snarfy » Mon, Jul 24, 2023, 1:27 PM UTC

dietrichepp wrote: post #10

This is for math. In Latex, you get these symbols with \mathbb{}. They are most commonly used to represent to represent number sets, like the set of all integers Z (from the German), set of all natural numbers N, set of complex numbers C, set of all real numbers R, rationals Q (for “quotient”), set of quaternions H (named after Hamilton), or an unknown set F (for “field”). This explains why many of the letters in thi…

They are an accessibility nightmare. I read a comment here recently from a blind person that had to give up on math education entirely due to all of the symbols not being supported by screen readers. It was pretty sad.

Re: Unicode Character “𝕏” (U+1D54F)

#145

Post by N19PEDL2 » Mon, Jul 24, 2023, 1:28 PM UTC

jonas-w wrote: post #8

You can also access x.com when using the Unicode Character https://xn--971h.com (𝕏.com)

Also https://xn--u1a.com is for sale (where х is a Cyrillic letter, see [0]).

Would be funny to buy it and make a redirect to threads.net.

[0] https://en.wikipedia.org/wiki/Kha_(Cyrillic)

Re: Unicode Character “𝕏” (U+1D54F)

#146

Post by PaulHoule » Mon, Jul 24, 2023, 1:29 PM UTC

voxadam wrote: post #51

PaulHoule wrote: post #45

Earlier quoted context omitted.

It’s already got to search 1000s of Chinese characters, a few more doesn’t make a big difference.

How do you decide which characters to index? The current Unicode release (15.0) includes 149,186 individual characters. I suppose you can probably ignore U+237C (Right Angle with Downwards Zigzag Arrow) seeing as nobody seems to know what it denotes.[0][1] [0] https://news.ycombinator.com/item?id=31012865 [1] https://ionathan.ch/2022/04/09/angzarr.html

Most search engines for languages like English are indexing words as opposed to characters so choices as to what characters are indexed are made as part of deciding which words to index.

Search engines for CJK languages do tend to work at the character level so a search for “Sona” on a certain site run by (I think) Chinese people will turn up result for “Persona”.

I was involved with an A.I. startup where we had lots of meetings about what to do about all the strange Unicode characters and right now in Mastodon there is a lot of concern that screen readers will choke on 𝐮𝐧𝐢𝐜𝐨𝐝𝐞 𝐛𝐨𝐥𝐝 𝐜𝐡𝐚𝐫𝐚𝐜𝐭𝐞𝐫𝐬 while it doesn’t seem that difficult to squash them down to ordinary characters or treat them exactly as unicode bold characters

Re: Unicode Character “𝕏” (U+1D54F)

#147

Post by misnome » Mon, Jul 24, 2023, 1:29 PM UTC

pilsetnieks wrote: post #48

spread_love wrote: post #32

Earlier quoted context omitted.

No, it changed ownership many times since 1999. > On July 5 2017, Musk repurchased the domain name X.com from PayPal They even took a little jab at him when it happened > "We are delighted to sell the domain x.com back to its previous owner"

[flagged]

I'm sorry to be the one to let you know but 2017 was under two decades ago.

Re: Unicode Character “𝕏” (U+1D54F)

#148

Post by enriquto » Mon, Jul 24, 2023, 1:29 PM UTC

folkrav wrote: post #142

enriquto wrote: post #135

Earlier quoted context omitted.

> This is for math. Heh. The "tabs vs spaces" debate of mathematical typography is whether these symbols should be used at all in printing, or reserved for actual blackboards. In LaTeX you can have actual boldface letters, so you should write a boldface letter R to represent the real numbers and so on. Using "blackboard bold" in print looks terribly off to some (many?) people.

Funny. Coming from a non-math background, having only one symbol to deal with feels less confusing than switching around symbols based on the medium it happens to be written on. Did one of the symbols come "first"?

Here you have the whole history:

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

Summary: boldface came first, in print, and was widely used. Much later, some mathematicians started to write blackboard bold on blackboards (because actual bold would be very untoward to write on a blackboard). Then, the usage was backported to print.

I find it ugly, a sort of breaking "suspension of disbelief", I don't know how to explain why. Some sort of "anachronistic" feeling, like watching a movie about the roman empire and some soldiers wear watches.

EDIT: as for having "different symbols", this is not the case. They are exactly the same symbol, with different faces. Like when you write the letters "a" or "g" very different on a blackboard as they appear on print.

Re: Unicode Character “𝕏” (U+1D54F)

#149

Post by booleandilemma » Mon, Jul 24, 2023, 1:29 PM UTC

dietrichepp wrote: post #38

masukomi wrote: post #20

Earlier quoted context omitted.

because elon renamed twitter to "x corp", bought the x.com domain and shoved this character on it.

The bird is a lot more recognizable, no? Maybe even beautiful?

I thought the same thing. The bird is endearing.

Changing it to X is something some edgy teenager would do. I can't help but wonder if he's trying to destroy twitter on purpose.

Re: Unicode Character “𝕏” (U+1D54F)

#150

Post by thebooktocome » Mon, Jul 24, 2023, 1:30 PM UTC

snarfy wrote: post #144

dietrichepp wrote: post #10

This is for math. In Latex, you get these symbols with \mathbb{}. They are most commonly used to represent to represent number sets, like the set of all integers Z (from the German), set of all natural numbers N, set of complex numbers C, set of all real numbers R, rationals Q (for “quotient”), set of quaternions H (named after Hamilton), or an unknown set F (for “field”). This explains why many of the letters in thi…

They are an accessibility nightmare. I read a comment here recently from a blind person that had to give up on math education entirely due to all of the symbols not being supported by screen readers. It was pretty sad.

One blind mathematician I know prefers reading LaTeX over pdf math for exactly this reason.