A Simple Proof of the Quadratic Formula · HackerPapers discussions

A Simple Proof of the Quadratic Formula — mentioned by Worf

Fri, 08 May 2026 12:54:06 GMT

I understand your point that you want a fixed presentation layout and pagination. I prefer to be able to responsively resize the document and to follow the ToC instead of pages. I've yet to see documentation that's thousands of pages long that doesn't include a very detailed ToC. For me remembering "section 8.3.16.2" is better and makes more sense than remembering "page 1292". I've had to read scanned math books years ago and I remember using some PDF reader to put bookmarks that correspond to the ToC, so I'd put "2.5.1.2 - Theorem about X" in the sidebar. That's how I was able to actually go…

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A Simple Proof of the Quadratic Formula — mentioned by dginev

Tue, 16 Apr 2024 00:02:36 GMT

If you are already using LaTeXML, it is also easy to get the ar5iv rendering (example article: https://ar5iv.labs.arxiv.org/html/1910.06709) You can either copy the CSS asset from: https://github.com/dginev/ar5iv-css and add "--css=ar5iv.css --nodefaultresources" to the command line options for latexmlpost (or latexmlc). Or alternatively, for people not interested in learning how to install and configure latexml, they can try the self-contained Dockerfile at: https://github.com/dginev/ar5ivist/

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A Simple Proof of the Quadratic Formula — mentioned by jll29

Thu, 13 Oct 2022 20:09:32 GMT

By the way, if you don't like reading bulky proprietary PDFs, there is a trick: substitute the x in arxiv.org by the digit 5, and you will see the paper rendered in HTML5, e.g.: https://ar5iv.labs.arxiv.org/html/1910.06709 (great work by FAU Erlangen's Michael Kohlhase and team).

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A Simple Proof of the Quadratic Formula — HN submission

Wed, 07 Sep 2022 08:48:01 GMT

A Simple Proof of the Quadratic Formula

2 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.

A Simple Proof of the Quadratic Formula — mentioned by rhn_mk1

Tue, 29 Mar 2022 06:32:32 GMT

Redirector rule: https://addons.mozilla.org/en-US/firefox/addon/redirector/ Example: https://arxiv.org/abs/1910.06709 Include pattern: https://arxiv.org/abs/\* Redirect to: https://ar5iv.org/abs/$1

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A Simple Proof of the Quadratic Formula — mentioned by svat

Sun, 28 Nov 2021 02:09:25 GMT

If this is indeed not new, one should be able to find a published source anywhere in the world's literature from before 2019 that does it this way, correct? The author mentions in his blog post / paper that he has looked for this exact method in many sources and not found it anywhere: can someone find it? See section 3.3 "Brief historical context" of the paper: https://arxiv.org/abs/1910.06709v2 — he also mentions on his website of many attempts to find this exact derivation somewhere earlier: https://www.poshenloh.com/quadratic/ > In summary, the author has not yet found a…

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A Simple Proof of the Quadratic Formula — mentioned by KolenCh

Sat, 27 Nov 2021 22:59:00 GMT

It is 2019-new https://arxiv.org/abs/1910.06709

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A Simple Proof of the Quadratic Formula — mentioned by finite_jest

Sat, 27 Nov 2021 21:31:42 GMT

I don't think this is new at all. This looks like just a standard proof of the quadratic formula. I believe most people probably have seen a variation of this in high school. Depending on your preferences, this might be a slightly better or worse presentation than what you have seen before. The fact that they couldn't (or haven't) publish it in a journal also supports this. [1]. (The ArXiv pre-print [2] is dated December 16, 2019) [1]: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=%22A... [2]: https://arxiv.org/pdf/1910.06709.pdf

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A Simple Proof of the Quadratic Formula — HN submission

Wed, 20 May 2020 21:23:17 GMT

A Simple Proof of the Quadratic Formula

1 point; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.

A Simple Proof of the Quadratic Formula — HN submission

Mon, 09 Dec 2019 13:11:29 GMT

A (New) Simple Proof of the Quadratic Formula

2 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.

A Simple Proof of the Quadratic Formula — HN submission

Sun, 08 Dec 2019 11:24:51 GMT

A Simple Proof of the Quadratic Formula [pdf]

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A Simple Proof of the Quadratic Formula — HN submission

Sat, 07 Dec 2019 22:42:32 GMT

A Simple Proof of the Quadratic Formula

2 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.

A Simple Proof of the Quadratic Formula — mentioned by spicymaki

Fri, 06 Dec 2019 13:24:16 GMT

Here is a link to the paper the story was based on: "A Simple Proof of the Quadratic Formula" https://arxiv.org/pdf/1910.06709.pdf

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A Simple Proof of the Quadratic Formula — HN submission

Fri, 25 Oct 2019 17:32:06 GMT

A Simple Proof of the Quadratic Formula

2 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.