【Hacker News搬运】字母℘：名称和来源？(2017)

hackernews

Title: The letter ℘: name and origin? (2017)

字母℘：名称和来源？(2017)

Text:

Url: https://mathoverflow.net/questions/278130/the-letter-wp-name-origin

很抱歉，我无法直接访问或处理网页内容。不过，我可以根据你提供的链接内容进行描述和总结。如果你能提供该网页上的文本内容，我可以帮助你分析并总结信息。

MathOverflow 是一个数学问题与答案的社区，用户可以提问、回答问题以及讨论数学相关的各种主题。你提供的链接指向的是一个关于数学符号“wp”名称起源的问题。

通常，数学符号“wp”在数学中指的是一个“primes of the form x^2 + y^2”的问题，即“华林问题”（Waring's problem）的特例。华林问题是关于将自然数表示为特定形式数之和的问题。

如果该网页上的讨论是关于“wp”名称的起源，那么可能的回答可能会涉及以下几个方面：

1. **符号的命名者**：可能会提到是谁首先使用“wp”来代表这个数学概念。
2. **命名的历史**：讨论“wp”是如何从其数学概念中产生的，以及是否有特定的历史事件或人物与之相关。
3. **数学文献中的引用**：可能会引用一些数学文献，说明“wp”何时开始被广泛接受并用于数学文献中。

如果你能提供网页的具体内容，我可以帮你进一步分析和总结。

Post by: IdealeZahlen

Comments:

non-: One thing I've always struggled with Math is keeping track of symbols I don't know the name of yet.Googling for "Math squiggle that looks like a cursive P" is not a very elegant or convenient way of learning new symbol names.I wish every proof or equation came with a little table that gave the English pronunciation and some context for each symbol used.It would make it a lot easier to look up tutorials & ask questions.

non-: 有一件事我；我一直在努力学习数学，但我一直在跟踪我不喜欢的符号；我还不知道的名字 谷歌搜索&quot；看起来像草书P“的数学曲线；不是一种非常优雅或方便的学习新符号名称的方法 我希望每个证明或方程式都有一个小表格，上面有英语发音和每个符号的上下文 这将使查找教程和；问问题。

science4sail: I must confess that I have an irrational fondness for the use of weird symbols in math and technical documents, whether it's for a homework assignment in school or a white-paper for work.My unit tests are literally full of hieroglyphics. My favorite design doc to this day is one where I sprinkled Sumerian cuneiform throughout the text, e.g. 𒀭𒄑𒉋𒂵𒎌 and 𒂗𒆠𒄭 (Gilgamesh and Enkidu) instead of Alice and Bob.

science4sail: 我必须承认，我非理性地喜欢在数学和技术文档中使用奇怪的符号，无论是；s是学校的家庭作业或工作白皮书。我的单元测试简直充满了象形文字。直到今天，我最喜欢的设计文档是我在整个文本中散布苏美尔楔形文字的文档，例如Gilgamesh和Enkidu，而不是Alice和Bob。

wduquette: I left college with a math degree and a profound antipathy for weird cursive symbols. The one that nearly killed me was the Greek "xi". I couldn't pronounce it, and I couldn't write it with any fluency, and in some of the classes I took it was everywhere.

wduquette: 我大学毕业时获得了数学学位，对奇怪的草书符号非常反感。差点杀了我的是希腊人&quot；xi；。我不能；我无法发音，也无法；我写得不流利，在我上的一些课上，到处都是。

zahlman: <pre><code> >>> import unicodedata
>>> unicodedata.name('℘')
'SCRIPT CAPITAL P'
>>> ord('℘')
8472
</code></pre>
<a href="https://en.wikipedia.org/wiki/Letterlike_Symbols" rel="nofollow">https://en.wikipedia.org/wiki/Letterlike_Symbols</a>Good enough for me.Notably, this is distinct from ("MATHEMATICAL SCRIPT CAPITAL P").> Books were printed in Fraktur, where the p looks quite normal, i.e., quite different from a handwritten Sütterlin p which could explain, why it hasn't been replaced in the publication of Amandus Schwarz.Indeed. ("MATHEMATICAL FRAKTUR CAPITAL P") is also separate (but also, Unicode considers these mathematical symbols to exist separately from "text written in Fraktur script". So you get separate characters allocated for these symbols, but they're not intended to be suitable for printing in Fraktur - which is supposedly a presentation (i.e. typeface selection) issue.Personally I'm not convinced that mathematical symbols derived from Latin or Greek (or other) scripts really have any claim to being separate "characters". Surely that's what variation selectors are for?

zahlman: <pre><code>&gt&&gt；&gt；导入unicodedata&gt&&gt；&gt；unicodedata.name&#x27；SCRIPT资本P；&gt&&gt；&gt；ord（■）8472</code></pre><a href=“https://en.wikipedia.org:wiki:Letterlike_Symbols”rel=“nofollow”>https://&#x2F；en.wikipedia.org；维基；Letterlike_Symbols</a>对我来说已经足够好了。值得注意的是，这与（&quot；MATHEMATICAL SCRIPT CAPITAL p&quot；）不同 &gt；书籍是用Fraktur印刷的，其中的p看起来很正常，即与手写的Sütterlin p完全不同，这可以解释为什么它没有；在《Amandus Schwarz》的出版中，它被取代了 确实如此。（“Mathematic FRAKTUR CAPITAL P”）也是独立的（但Unicode认为这些数学符号与“用FRAKTUR字体书写的文本”是分开存在的）。因此，您可以为这些符号分配单独的字符，但它们不适合用FRAKTUR-这应该是一个演示（即字体选择）问题 就我个人而言；我不相信源自拉丁语或希腊语（或其他）文字的数学符号真的有任何独立性&quot；字符”；。当然；变量选择器是用来做什么的？

zusammen: I think one’s getting a lot of upvotes from people who meant to click on the link.

zusammen: 我认为人们从那些想点击链接的人那里得到了很多支持票。