逆的加法; ？ [英] Inverse of ± ?
问题描述
Unicode U + 00B1是& plusmn; - 坐在减号上方的加号，
可能显示为±; ISO + 7编码中的加/减。
正如艾伦无疑要记得的那样，代数工作需要这个角色
可能需要它的倒数，减号/加号，一个减号坐在
的加号上面。
我没找到它中等大小的Unicode字符列表;也没有
我找到了一个有效的实体名称。
这是在Unicode中的减号/加号（浏览器众所周知） ？
否则，是否有一些相同外观的外星人角色？
如果没有，可以解决遗漏吗？
-
（c）John Stockton，英国萨里。 ?@merlyn.demon.co.uk Turnpike v6.05 IE 6
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Unicode U+00B1 is ± - a plus sign sitting on top of a minus sign,
possibly visible as "±"; "plus/minus", in ISO-7 coding.
As Alan will no doubt remember, algebraic work requiring that character
may well have need of its reciprocal, "minus/plus", a minus sign sitting
on top of a plus sign.
I''ve not found it in a middle-size list of Unicode characters; nor have
I found an entity name that works.
Is minus/plus, as such, in Unicode (and is it well-known to browsers)?
Otherwise, is there some alien character of the same appearance?
If not, can the omission be rectified?
--
(c) John Stockton, Surrey, UK. ?@merlyn.demon.co.uk Turnpike v6.05 IE 6
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推荐答案
JR Stockton博士写道：
Dr J R Stockton wrote:
>
Unicode U + 00B1是&安培; plusmn; - 坐在减号上方的加号，
可能显示为±; ISO + 7编码中的加/减。
正如艾伦无疑要记得的那样，代数工作需要这个角色
可能需要它的倒数，减号/加号，一个减号坐在
的加号上面。
我没找到它中等大小的Unicode字符列表;也没有
我找到了一个有效的实体名称。
这是在Unicode中的减号/加号（浏览器众所周知） ？
否则，是否有一些相同外观的外星人角色？
如果没有，是否可以纠正遗漏？
>
Unicode U+00B1 is ± - a plus sign sitting on top of a minus sign,
possibly visible as "±"; "plus/minus", in ISO-7 coding.
As Alan will no doubt remember, algebraic work requiring that character
may well have need of its reciprocal, "minus/plus", a minus sign sitting
on top of a plus sign.
I''ve not found it in a middle-size list of Unicode characters; nor have
I found an entity name that works.
Is minus/plus, as such, in Unicode (and is it well-known to browsers)?
Otherwise, is there some alien character of the same appearance?
If not, can the omission be rectified?
U + 2213 =∓
U+2213 = ∓
JR Stockton博士写道：
Dr J R Stockton wrote:
Unicode U + 00B1是& plusmn; - 位于减号
标志顶部的加号，可能显示为±; ISO-7编码中的加/减。
Unicode U+00B1 is ± - a plus sign sitting on top of a minus
sign, possibly visible as "±"; "plus/minus", in ISO-7 coding.
U + 2213 MINUS-OR-PLUS SIGN
[snip]
U+2213 MINUS-OR-PLUS SIGN
[snip]
我没有在中等大小的Unicode字符列表中找到它;也没有
我找到了一个有效的实体名称。
I''ve not found it in a middle-size list of Unicode characters; nor
have I found an entity name that works.
您可以在Unicode
代码表的数学运算符部分找到它。
PDF：< http://www.unicode.org/charts/PDF/U2200.pdf>
它也在U + 00B1旁边的General Punctuation部分引用
PLUS-MINUS SIGN。
PDF：< http://www.unicode.org/charts/PDF/U2000.pdf>
You can find it in the Mathematical Operators portion of the Unicode
code charts.
PDF: <http://www.unicode.org/charts/PDF/U2200.pdf>
It''s also referenced in the General Punctuation section alongside U+00B1
PLUS-MINUS SIGN.
PDF: <http://www.unicode.org/charts/PDF/U2000.pdf>
因此，在Unicode中是减号/加号（
浏览器是众所周知的）？
Is minus/plus, as such, in Unicode (and is it well-known to
browsers)?
关于浏览器，在
版本7之前，它不会在MSIE中呈现（这里），尽管它在Opera中7+和Mozilla 1.0+。也许这是
，因为那些早期的IE版本是独立的 - 这往往会导致许多讨厌的问题。其他人必须告诉你是否这是一个真正的缺陷（虽然你现在有IE6，不是吗？）
[snip] ]
Mike
With regard to browsers, it isn''t rendered (here) in MSIE prior to
version 7, though it is in Opera 7+ and Mozilla 1.0+. Perhaps this is
because those earlier IE versions are stand-alone - that tends to
introduce many annoying problems. Someone else will have to tell you if
it''s a real flaw (though you have IE6 now, don''t you?)
[snip]
Mike
消息< 4s ************ @ mid.individual .net>，星期四，2006年11月16日
13:31:39，Harlan Messinger< hm ******************* @ comcast。 netwrites
In message <4s************@mid.individual.net>, Thu, 16 Nov 2006
13:31:39, Harlan Messinger <hm*******************@comcast.netwrites
> JR Stockton博士写道：
>Dr J R Stockton wrote:
> Unicode U + 00B1是& plusmn; - 位于减号
标志上方的加号，可能显示为±;在ISO-7编码中加上加/减。
正如艾伦无疑要记得的那样，需要
字符的代数工作可能需要它的倒数，减号/加号，减去
坐在加号上面的标志。
我没有在中等大小的Unicode字符列表中找到它。也没有找到一个有效的实体名称。
在Unicode中是减号/加号（这是否为
浏览器所熟知）？否则，是否有一些相同外观的外星人性格？
如果没有，是否可以纠正遗漏？
> Unicode U+00B1 is ± - a plus sign sitting on top of a minus
sign, possibly visible as "±"; "plus/minus", in ISO-7 coding.
As Alan will no doubt remember, algebraic work requiring that
character may well have need of its reciprocal, "minus/plus", a minus
sign sitting on top of a plus sign.
I''ve not found it in a middle-size list of Unicode characters; nor
have I found an entity name that works.
Is minus/plus, as such, in Unicode (and is it well-known to
browsers)? Otherwise, is there some alien character of the same
appearance?
If not, can the omission be rectified?
U + 2213 =∓
U+2213 = ∓
谢谢。但它不为XP sp2 IE6所知。注意将来使用。
-
（c）John Stockton，英国萨里。 ?@merlyn.demon.co.uk Turnpike v6.05 IE 6.
Web< URL：http：//www.merlyn.demon.co.uk/- w。常见问题主题，链接，首字母缩略词
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日期 - miscdate.htm moredate.htm js-dates.htm pas-time.htm critdate.htm等
Thanks. But it''s not known to XP sp2 IE6. Noted for future use.
--
(c) John Stockton, Surrey, UK. ?@merlyn.demon.co.uk Turnpike v6.05 IE 6.
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