科学与数学ourway.keybase.pub
数学全能速查表（2013）[PDF]
Mathematics all-in-one cheat-sheet (2013) [pdf]
2019 — 2021，它一次次回到首页
黑点是上首页（≥ 50 分）的那次投稿，空心点是没冲上去的投稿，点越大分数越高。
导读
这是一份由 Alex Spartalis 编写的超大规模数学速查表 PDF（v2.10），涵盖从代数、微积分到概率统计等大量数学公式与内容，篇幅达数百页。它曾于 2019 年和 2021 年两度登上 Hacker News 首页，但完整版中部分分布函数章节因文件大小限制而缺失。
为什么经久不衰：它以一份文档浓缩了海量数学知识，虽然实用性见仁见智，但作为数学参考大全和讨论'速查表是否真有用'的引子，多年来仍被反复提起。
HN 评论精选
指出作者主页及完整版缺失的原因，呼吁帮作者分发作品
作者的页面值得一看：那里有相同版本（v2.10），并注明'网页版因文件大小限制不含分布函数，需要可发邮件索取'。这解释了为什么 213-330 页缺失。有人应该把完整版上传到 keybase.pub 之类的地方，因为他的个人网站扛不住流量。人们有时花了巨大心血做出作品，却没怎么去分享和推广。
alister查看英文原文
I think the author's page (Alex Spartalis) deserves to be mentioned: https://www.alexspartalis.com/cheat-sheet.html He has the same version (v2.10) there and mentions that, "The Web version does not include the distribution functions due to file size restrictions. Email me if you would like a copy of these." That explains why pages 213-330 are missing. Someone should offer to upload the full copy to keybase.pub (or someplace) since his personal site can't handle the load. People sometimes do tremendous work creating a program/book/artwork, and want the world to see it, but don't get around to really share it or promote it.
质疑这种大而全的速查表实际可用性
我有点为作者感到难过——花了数月整理这份半全面的参考。信息量巨大，但对任何特定读者来说有用的信息却很少。它太宽泛了，反而妨碍日常查阅。谁会用它？你难道不会去找更贴合自己领域的参考吗？
supernova87a查看英文原文
Wow, I have to say I feel somewhat bad for the author who spent so much time (months?) compiling this semi-comprehensive reference work. There's so much information, but at the same time, so little useful information to any particular reader. It's so broad as to be a hindrance to using it in any sort of daily reference. Who would use this? Wouldn't you probably resort to a reference more specific to your field? Is this the product of someone's superficial fascination with mathematical equations combined with OCD to copy down everything ever read, gone awry? Or is this like a strange version of a Noah Webster?
整理速查表的过程才是学习的价值所在
制作自己的速查表本身就是学习的一半。我大四随机过程课允许带一页双面笔记，我用 LaTeX 写好并分享给全班，大家一起完善。有人不理解我为何'帮别人'，但一页公式就能让你拿 A 吗？花那么多时间整理公式、做例题后，考试三小时里我大概只看了那页纸两次。
kejaed查看英文原文
Making your own cheat sheet is half the battle when you are trying to learn the topic. I remember in my 4th year Stochastic Processes class [0] (back in 2005, wow) we could bring in a double sided page of notes. I wrote my sheet up in LaTeX [1] and shared it with the class, of course this made it better by having others contribute. Some didn’t understand why I would “help others out” by giving it away, but I never understood that, like a page of formulae are going to get you an A (also why not help others out?). Of course after spending so much time developing the formula sheet and working through the example problems (always the most important thing you can do), I think I looked at the sheet twice in 3 hours during the exam. Also, Dr. Glen Takahara, this class and your instruction are one of my fondest memories at Queen’s! [0] http://kje.ca/school/stat455/cheat2.pdf [1] https://mast.queensu.ca/~stat455/
别人做的速查表无法替代自己整理的过程
人们真的会用这份或其他网上的速查表吗？以我的经验，任何不是我自己做出来的速查表对我都没用。跳过自己综合整理信息的过程直接查表，就错过了最重要的部分。
beforeolives查看英文原文
Do people really use this or any other of the cheatsheets you find online? In my experience, any cheat sheet that I didn't make myself is useless to me. Going directly to the sheet without having done the synthesis of information yourself skips the most important part of the process.
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