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U+237C ⍼ Right Angle with Downwards Zigzag Arrow

ionathan.ch

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Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#241

Post by teddyh »

masklinn wrote: post #37
imglorp wrote: post #23

Earlier quoted context omitted.

Well, Klingon [edit, was proposed] for Unicode. Maybe someone imported some 70s scifi orthography, just because.

> Klingon made it into Unicode. No it did not. Klingon was originally proposed in 1997 and rejected in 2001. A second proposal was made in 2016 with more optimistic noises. But AFAIK it has yet to be accepted. It is also, like Tengwar and Cirth (which AFAIK remain unincluded even though they are on the BMP roadmap), held back on IP grounds. To my knowledge, the IP issues remain fully unresolved. Klingon is included i…

ConScript seems to have been semi-replaced by the Under-ConScript:

https://www.kreativekorp.com/ucsur/

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#242

Post by jjtheblunt »

ectopod wrote: post #203
jjtheblunt wrote: post #145

AMS = American Mathematical Society last i subscribed. How the heck would someone surveying mathematicians not have found that?

In a linked post Barbara Beeton says not. She collated these characters while working for the AMS so she should know. https://tex.stackexchange.com/questions/640588/what-is-%E2%8...

that's even more wild! thank you for sharing / emphasizing that curious twist

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#243

Post by HNHatesUsers »

firstcommentyo wrote: post #98

Dislosure: I'm not directly from the fields of the Sciences Of Angles And Ambiguously Crossing Lines nor I've every seen or used this symbol before. However to me it's, pretty evidently, supposed to be a "no right angle" symbol. (A) It's in the math section, (B) it's with angles, (C) the thunderbolt ↯ is commonly used for "not" or more specifically for dis-proof in this area and (D) at least by my 30 s internet searc…

No post body was provided.

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#244

Post by teddyh »

albrewer wrote: post #208
tarsinge wrote: post #76

And still no external link character, ridiculous.

Hm, now that you mention it, I always thought of the external link symbol as being a box with an arrow coming from inside it and protruding out of the upper right hand corner, but I don't see that symbol anywhere in Unicode, and I'm not sure why I have that association. There is the U+1F517 link symbol but I'm not sure that's communicating the same thing.

I often see a globe symbol used to indicate external links; i.e. U+1F310, U+1F30D, U+1F30E, or U+1F30F.

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#245

Post by ghostoftiber »

(Edited to upload the image to imgur and avoid spammy advertisements).

Here I'll date myself: I remember this as "diode with a gate". Back when we did circuit diagrams with stencils, you had the diode stencil which looks like a triangle with a line on top, and then with the electrical stencils you had "decorations".

The intention was to put down the original symbol on the paper, move the decorations stencil over top of it and then add the required decorations. It's why diode symbols look like this: https://imgur.com/a/0tSLV7O (notice "step recovery diode").

The "lightning bolt" isn't a lightning bolt, it's a hint that this diode is going to have a very sharp "snap off" in the waveform. See: https://www.electronics-notes.com/articles/electronic_compon...

OK so why do we have a seperate decorator for a diode? Can't we just have a pocket full of stencils for diodes? Space was at a premium back then. It goes back to daisy wheels and typeballs: https://en.wikipedia.org/wiki/Printer_(computing)#Impact_pri... You would have one position for "diode" and one position for "decorator" and the printer would know when it got one ASCII char it would print the diode, then send whatever the thin space is to advance the print carriage a small step, then print the decorator.

Someone should be able to find a daisy wheel or typeball dedicated to circuits and bear this out.

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#246

Post by cygx »

blacklion wrote: post #240
cygx wrote: post #73

Earlier quoted context omitted.

Upper-case subscripts are missing, for one: I'm not allowed to talk about the normal force F_N in plain text email. Superscript and subscript Greek letters would also be nice to have, eg in context of relativity.

Why not Devanagari then? This Europe-centric point of view bother me. Also, I've seen a lot of different symbols as subscripts in mathematical and physical articles, like squares, triangles, arrows, etc.

Why not Devanagari then? This Europe-centric point of view bother me.

Sure: As I mentioned in another comment, I'd add markers to enable arbitrary super and subscripting.

However, the question I responded to was asking what specifically people were missing in practice, and the examples I gave are things I personally would have used if they had been available.

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#247

Post by HNHatesUsers »

tclancy wrote: post #153
bryanrasmussen wrote: post #11

Earlier quoted context omitted.

>These unicode characters feel like they were given to us from an alien species or something. I worked at a large media company that had lots of differing icon sets in play across different media. These icons were in SVG and they had been optimized pretty intensely. In some cases due to a bug in one of the optimizing tools some types of bezier curves got weird, so instead of say the round headed person with their han…

>the star headed monstrosity pointing to doom from the heavens That sounds like a useful reaction/ response these days.

No post body was provided.

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#248

Post by AaronFriel »

qiskit wrote: post #214
esperent wrote: post #165

Earlier quoted context omitted.

> the thunderbolt ↯ is commonly used for "not" or more specifically for dis-proof in this area and I don't think it's that common. At least, I don't recall seeing it ever. Maybe it's used in non-English mathematics? Wikipedia mentions it's also used in electrolysis so maybe this new one is related to that somehow?

Same. Never seen that symbol in my life. I've seen ¬, ~, !, etc used for not/negation in computer science, math, logic, etc. And some commenters said they used it to mark proof by contradiction, but why is there a need to mark it when you are showing it via proof? A canonical example of proof by contradiction is proving sqrt(2) is not rational. Never have I seen it marked with that symbol. Where would you even mark i…

Math degree holder from Iowa, yeah, I've seen and used it many times. The symbol is used when you reach the contradictory statement. Like "1 = 2".

"By way of contradiction suppose P, then ..., thus ~P ↯. Therefore ..."

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#249

Post by timonoko »

It is a proofreaders mark with languages with long words. The L-shape is "Split the word here" and same with arrow-squiggle on top is "Do it at the next syllable or not at all". For example words "YÖ-KLUBI" and "YÖK-LUBI" have different meanings. Source: I have seen Finnish proofreaders marks.

Re: U+237C ⍼ Right Angle with Downwards Zigzag Arrow

#250

Post by paledot »

kens wrote: post #222
firstcommentyo wrote: post #98

Dislosure: I'm not directly from the fields of the Sciences Of Angles And Ambiguously Crossing Lines nor I've every seen or used this symbol before. However to me it's, pretty evidently, supposed to be a "no right angle" symbol. (A) It's in the math section, (B) it's with angles, (C) the thunderbolt ↯ is commonly used for "not" or more specifically for dis-proof in this area and (D) at least by my 30 s internet searc…

I've thought that it would be cool to have a Wiki with an entry for each character, describing what it is, and its history. Although that wouldn't help for mystery characters like this one, there are a lot of characters with stories behind them.

I was just discussing :man-in-business-suit-levitating: with some friends earlier today. Also an interestingly cryptic background, albeit not an unsolved one.

https://emojipedia.org/person-in-suit-levitating/

(Edit: Apparently HN automatically removes emoji.)

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