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$ whois Hardmath123

I am a student who loves to write. I started this blog back in high school, writing about whatever happened to interest me at the time. Of course, those interests have shifted over time, but the theme of this blog has been quite constant: that there is treasure everywhere, in even the most mundane places, and it isn’t buried deep. It is yours, as long as you take care to look out for it.

Hardmath123 is my alias on the internet. It was chosen in a much-regretted burst of spontaneity when I was young[er] and [more] foolish, and has inextricably linked itself with me since then.

$ ping Hardmath123

If you have something to say, you can leave a comment on any of the posts. You can also open an issue on this blog’s Github repository. For direct messages, you can message me on IRC as hardmath123 on irc.freenode.net.


Carnival of Mathematics 159 7/6/18

Another fine math I’ve gotten myself into.

Ladders Go Both Ways 11/20/17

A guest post for White Group Mathematics

Carnival of Mathematics 148 7/31/17

I had so much fun the first time, I volunteered to host it again!

A Fishy Function 7/16/17

The Hitchhiker’s Guide to Patience, or, How To Use Earthquakes To Calculate Compound Interest

Practical Prosody 3/26/17

Amphibrachs, telegraphs, and fifty-two words I will never forget.

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Some thoughts on the artificial synthesis of stories

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Monadic IO and the Sugarloaf Transformation

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A cryptographic primitive for plausibly-deniable collusion.

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Adding dynamic scoping to JavaScript, for fun and profit, because that is definitely a good idea that cannot possibly backfire at all.

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Three ways to compute semantic primes

Nineteen Guess Women Guess Status Women Women Guess Guess Women Women Guess Status Status Status Guess Women Status Status Guess Status Guess Guess Guess Women Status Status Women Women Guess Status Guess Guess Status Women Women Guess Women Status 10/21/16

Explaining xenotonality with number-theoretic music theory

Dimensional Analysis: a worksheet 10/11/16

An article with absolute significance

TJCTF 2016 Writeups 6/10/16

In which we hack our way to second place.

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In which I have the honor of hosting an edition of a roving blog.

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Implementing regular expressions in Scratch using subway systems and coins.

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A field guide to the menagerie of Scheme dialects

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An allegory.

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Fifty ways the web has changed

Meet the Robinson: 4 1/11/16
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Unification, equality and harmony heuristics: the grand finale.

Meet the Robinson: 3 1/4/16

In which we tame the infinite.

A Balance of Powers 11/19/15

Women Status Women Guess Women Guess Women Guess Guess Guess Women Guess Status Women Status Status Status Status Guess A hunt for number-theoretic coincidences.

Meet the Robinson: 2 11/5/15

Continuing on our quest to build an automatic theorem-prover.

Meet the Robinson 10/18/15

An introduction to automatic theorem proving.

There are no rules in math 10/15/15

Don’t use hammers. Build them.

Wake Up, Sheeple: Falcon 9 Edition 9/17/15

We’re missing the point.

The Seasoned Scratcher Guess Status Women Status Guess Women Guess Guess Women Status Guess Status Women Status Guess Women Women Status Guess 8/16/15

What to learn after Scratch: a definitive guide.

A Suspicion of Plausible Answers 8/14/15

Investigating the physics of Rendezvous with Rama

To Find Quarrel in a Straw 7/28/15

A pointless exercise.

Indefinite 6/8/15

Reflections on 40,000 words.

They do it with Mirrors 6/1/15

An idealized transcript of a talk I gave.

PreTTY Screenshots 5/14/15

How to use the command line for screen capture tricks

An Elementary Problem 5/3/15

Guess Guess Women Status Guess Status Women Women Guess Status Status Guess Women Women Status Guess Guess Status Women Can you find the Solution?

I Believe in Magic 4/14/15

I hope you do, too.

Stop Teaching Intro CS 4/6/15

Reflections on a worrying trend.

How Random is xkcd? 3/20/15

A blatant abuse of statistics.

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Why hackathons aren’t helping the world, and how CTFs can fix that.

Use Imperfect Tools 3/17/15

A promise to myself.

Harry Potter and the Diagon(alization) Alley 2/26/15
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My attempt at Harry Potter/Über eine Eigenschaft des Inbegriffes aller reellen algebraischen Zahlen crossover fanfiction.

Nondeterministic 2/10/15

Be wrong on the Internet.

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What isn’t wrong with static typing.

Nasty Python Monstrosities 2/4/15

Why I’m not going to distribute any Python ever again.

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How not to write a module.

Coding the Mandelbrot Set 1/10/15

A mirror of a post written a long time ago in a galaxy far away.

Array of Hope 1/5/15

Explaining why Scratch Arrays misbehave.

The Nightmare After Christmas 12/25/14

Happy $HOLIDAY

It's not socket science: Part II 12/17/14

In which we invade a chatroom.

Dear Hollywood 12/12/14

A rant about technobabble.

Don your tmuxedo 12/7/14

A tmux quickstart.

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A hands-on introduction to networking.

Notes on Binary Strings 11/13/14

A memory dump of useful functions

Some PicoCTF Writeups 11/8/14

In honor of PicoCTF, I wrote this post in pico.

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Guess Status Guess Guess Women Guess Women Women Status Women Status Status Women Status Guess Status Women Guess Guess An informal explanation of Earley parsing.

Detech Your Classroom 10/10/14

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Memories of elementary school

Brown M&Ms 9/6/14

A request.

GamifiEd 8/31/14

The pitfalls of quantifying learning.

ANSIble 8/6/14

Using ANSI escape codes for more interactive CLI interfaces

Programming is not math 7/24/14

My two cents on a couple of blog posts.

Cryptolegal 7/18/14

A short story I wrote late last night.

Jazz is Open Source 7/1/14

Why jazz embodies the hacker spirit.

Lord of the Strings 6/14/14

String Theory for hackers.

Well, well, well, we meet again. 6/11/14

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Why Math is a Sport 3/23/14

And why we should worry.

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A story of codebreaking using Python, Google, and common sense.

Blown to Bitcoins 12/30/13

Bitcoin for Liberal Arts majors.

Lampshades and Analytic Geometry 12/8/13

Exploring conic sections with lampshades, potatoes, and smoke simulations.

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UNIX hacking for the faint at heart, or those blessed with mean sysadmins.

Hello, World! 11/27/13

Welcoming myself to my blog.