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U+237C ⍼ Right Angle with Downwards Zigzag Arrow

ionathan.ch

151–160 of 312 posts

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

#151
post #91

I would think something like this: | | \ | \ | \ /\ | \/ \ | \ | _\/ | +——————————————— Could (more or less) fit that description and would make more sense as a symbol. Something like it even made it into Unicode ( https://emojipedia.org/chart-decreasing/ )

It's like the icon in question is a drunk / mirrored version of this one, from memory, drawn behind the back.

It's like o7 vs 7o; if you know you know: http://i.imgur.com/ZjhHU87.jpg

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

#152
post #34

Earlier quoted context omitted.

We can't assume a signed int, as character encodings limit the number of codepoints: "Excluding surrogates and noncharacters leaves 1,111,998 code points available for use." -- https://en.wikipedia.org/wiki/Unicode#:~:text=Excluding%20su...

But character encodings don't limit the number of codepoints. Unicode is just a big list of correspondences between an integer and a glyph. There's no limit to how many integers you can assign. Unicode encodings are separate standards that give correspondences between Unicode code points (integers) and byte sequences. If Unicode changes in a way that invalidates an encoding, that just calls for a new encoding.

Yes, it could technically be extended, but the transition would be a massive undertaking, so in practice the encodings do limit the number of codepoints. UTF-16, which creates the limitation, is very widely used and required by major programming language standards like ECMAScript. A lot of software still can't cope with codepoints outside the BMP, and they were established with UTF-16 in 1996.

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

#153

These unicode characters feel like they were given to us from an alien species or something. How did it we end up with so many characters of unknown origin? I had no idea what it meant or was used for, thus assigned it a “descriptive name” when collating the symbols for the STIX project. (I still have no idea, nor can supply an example of the symbol in use.) […] it is the case that ISO 9573-13 existed long before eit…

>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.

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

#154
post #91

I would think something like this: | | \ | \ | \ /\ | \/ \ | \ | _\/ | +——————————————— Could (more or less) fit that description and would make more sense as a symbol. Something like it even made it into Unicode ( https://emojipedia.org/chart-decreasing/ )

The article makes a decent case for the symbol to be a chart symbol that means "no right angle". The zig zag arrow apparently being a shorthand for "no" in that particular circle.

It looks like a symbol that someone added for completeness but isn't particularly useful even in the field.

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

#155
post #135

Earlier quoted context omitted.

The word "public" in "public library" is load bearing, you can't replace it with "regular", hence your confusion. Private libraries (mine for example) are not free, as in beer or otherwise.

True, though to be fair most people never get to use private libraries. Or they used a library at their University that was technically private, but that gave access to the public as well. Public libraries are ubiquitous and very normal, while private libraries are the exception.

It's a normal elision, yes, we all picture a public library when we say "library". But "free library" isn't redundant or weird, because "public" is a modifier of library, not a trait.

People tend to call their personal library a "book collection" or the like, but it's a library, in just the same way that a Little Free Library is.

So most people who read have at least a small private library, whether they think of it in those terms or not.

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

#156

Earlier quoted context omitted.

I remember the days of people beginning to abuse ftp sites, all us admins shutting down our writable ftp upload folders, and thinking, "this is why we can't have nice things." It was the beginning of the end of the early, friendly internet.

Wearz were very nice things.

It’s Warez.

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

#157
post #82

Earlier quoted context omitted.

Not long ago I found these ≤ U+2264 LESS-THAN OR EQUAL TO ⋜ U+22DC EQUAL TO OR LESS-THAN ≥ U+2265 GREATER-THAN OR EQUAL TO ⋝ U+22DD EQUAL TO OR GREATER-THAN or even ⋚ U+22DA LESS-THAN EQUAL TO OR GREATER-THAN ⋛ U+22DB GREATER-THAN EQUAL TO OR LESS-THAN

The former is probably for the same reason that both plus-minus and minus-plus exist. The latter is commonly used for the "unordered" relation in partially ordered sets.

Wouldn't "less than, equal to, or greater than" imply anything EXCEPT unordered?

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

#158
post #89
post #55

Earlier quoted context omitted.

Sometimes people should be able to do nice things without it getting abused, no? In The Netherlands, in the nicer neighborhoods we have something called a ‘buurtbieb’ aka a ‘neighborhood libraries’, which is a weatherproof cabinet where people can put surplus books that other people in the neighborhood can borrow. Of course you could take all the books or use the cabinet to store candy, but why would you?

Usually called Little Free Libraries in the US. (The name is a little weird, because regular libraries are also free...)

Yeah, but if you take a book from a LFL, you own it. With a public library, you merely borrowed it.

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

#159
post #132
post #82

Earlier quoted context omitted.

Not long ago I found these ≤ U+2264 LESS-THAN OR EQUAL TO ⋜ U+22DC EQUAL TO OR LESS-THAN ≥ U+2265 GREATER-THAN OR EQUAL TO ⋝ U+22DD EQUAL TO OR GREATER-THAN or even ⋚ U+22DA LESS-THAN EQUAL TO OR GREATER-THAN ⋛ U+22DB GREATER-THAN EQUAL TO OR LESS-THAN

> ⋚ U+22DA LESS-THAN EQUAL TO OR GREATER-THAN > ⋛ U+22DB GREATER-THAN EQUAL TO OR LESS-THAN These are very interesting. What would be the use case for these?

https://en.wiktionary.org/wiki/%E2%8B%9A

> If the function f is differentiable and concave, then f′(x1)⋚f′(x2) as x1⋛x2. That is f′(x1) and f′(x2) have the opposite relation as x1 and x2.

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

#160
post #138

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…

> (C) the thunderbolt ↯ is commonly used for "not" or more specifically for dis-proof in this area Any examples?

High school physics and math as a major. I could scan you my scripts and papers if you're interested.....no won't. ;-D

But maybe "commonly used" was maybe the wrong term. More appropriately: "sometimes" or "by some".

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