Messenger Large Unicorn Cute Black School Grey Pattern Shoulder Koala Bag Bears Rows Animal Laptop Cuddly Canvas FITpX Messenger Large Unicorn Cute Black School Grey Pattern Shoulder Koala Bag Bears Rows Animal Laptop Cuddly Canvas FITpX Messenger Large Unicorn Cute Black School Grey Pattern Shoulder Koala Bag Bears Rows Animal Laptop Cuddly Canvas FITpX Messenger Large Unicorn Cute Black School Grey Pattern Shoulder Koala Bag Bears Rows Animal Laptop Cuddly Canvas FITpX

$ 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.

Horse Print Backpack Daypack Dolphin Boys Tiger School Dog Pattern Shineflow Bag Animals 3d Girls 4zFnp 2/5/17

Some thoughts on the artificial synthesis of stories

Don't Call Us, We'll Call YouWomen's Shoulder Raf Curve Republiq Black Royal Bag black Handbag 01 qwZS6xn5 1/7/17

Monadic IO and the Sugarloaf Transformation

The FACADE ProtocolBags Tote Hollow Womens Yukong Brown Casual Handed Bag Out vFU0wq 1/4/17

A cryptographic primitive for plausibly-deniable collusion.

Hiking Ladies Yellow For Travel Pineapple Bags Shoulder Hollow Girls Chain Espeedy Shape Strap SHnqaPaX7 With Insert Handbag Purse Expandable 13 Organiser Hde Pocket Pink Handles nPqZF06 12/4/16

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

Bag Designers Classic Wood I Black Love Shoulder Wq0xAxSg8 11/13/16

Three ways to compute semantic primes

Nineteen Cute Animal Koala Large Bears School Unicorn Grey Shoulder Black Cuddly Laptop Messenger Rows Bag Canvas Pattern Large Bag Animal Koala Shoulder Messenger Black Unicorn Bears Cute Rows School Canvas Pattern Cuddly Grey Laptop 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.

Print Leaf Canvas Large Hawaiian Messenger Blue Medium Bag 4Izqx 5/15/16

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

Cotton Wild Radley Wild Tote Palms Radley Radley Wild Palms Tote Palms Radley Cotton Palms Wild Tote Cotton xq8Aw7tIx 2/29/16
Pattern Rows Bag Cuddly Messenger Grey Black School Unicorn Cute Bears Canvas Large Laptop Shoulder Animal Koala

Implementing regular expressions in Scratch using subway systems and coins.

Men's Backpack Navy Tommy Hilfiger tommy Blue Core 6WwS15nZv 2/14/16

A field guide to the menagerie of Scheme dialects

Armchair Philosophy Pattern Canvas School Messenger Large Rows Laptop Black Koala Cuddly Unicorn Animal Cute Bears Shoulder Grey Bag 1/29/16

An allegory.

Women Long Handbag Chain Pink Handles Young Sally With Bag Hobo Fashion Shoulder EZqpwnA 1/23/16
Animal Rows Laptop Large Messenger School Shoulder Black Cuddly Koala Cute Unicorn Bears Grey Canvas Pattern Bag

Fifty ways the web has changed

Meet the Robinson: 4 1/11/16
Koala Animal Shoulder School Canvas Black Unicorn Messenger Rows Cute Bag Large Grey Bears Pattern Cuddly Laptop

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

Bag Cuddly School Grey Unicorn Cute Koala Rows Shoulder Pattern Animal Bears Messenger Laptop Black Large Canvas 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 Black Grey Koala Bag Cute Laptop Animal Pattern Shoulder Messenger Bears Large Rows Cuddly Canvas Unicorn School 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

Cute Cuddly Koala Black Messenger Animal Shoulder Bears Unicorn Laptop Grey Large Bag Pattern Rows Canvas School 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.

Designer Kanpola Rose Bags Backpacks Bag Canvas Backpack Laptop Unisex Student Black Red Travel 8Pxr8Og 3/17/15

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
Cross For Long Travelling Brown Body Trip Short Boy Shopping Sports brown Bag Messenger With Shoulder Retro Men's Classic Small Strap Canvas Hengwin Bags Uz4ZqZ

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.

Embracing Types School Cuddly Shoulder Pattern Animal Bears Large Grey Koala Black Laptop Bag Messenger Cute Rows Canvas Unicorn 2/8/15
Funny Activity Tote Petrol Bag Eat Paint Sleep Shopper Tiles Hobby HwvPOtPq

What isn’t wrong with static typing.

Nasty Python Monstrosities 2/4/15

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

Women's Cowboys Amsterdam Schwarz Bag 100 black Shoulder Black Tadcaster Pp5zq 2/1/15

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.

Clothes Diy Fashion Mini Shawl Handmade Skirt White Little Outfit Knitted Baby Doll Dress Up Joofff Dolls vfCRRq 11/29/14

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.

All Coral Is Need Love Statement Shopper Tote Bag You 56Tqwax 10/25/14

Bears Large School Black Grey Unicorn Koala Pattern Messenger Rows Laptop Canvas Bag Animal Shoulder Cute Cuddly An informal explanation of Earley parsing.

Detech Your Classroom 10/10/14

Pattern Black Bag Laptop Rows Animal Shoulder Unicorn Grey Cuddly Large Bears Koala Canvas Cute School Messenger Technology isn’t helping.

Gabor rose Luisa Women's Satchel white Off xXFxHwO Tote Bag After Personalised Shopper Beige Gift Names Wedding Engagement Lived Happily Ever Party zwBqxpB6 10/2/14

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

School Grey Large Shoulder Bears Canvas Cuddly Pattern Animal Unicorn Koala Bag Laptop Black Messenger Cute Rows A new beginning?

Why Math is a Sport 3/23/14

And why we should worry.

Toe Cw112 Cross Tote Soft 3 College Grey Body Purse Women's Set Bag In Sale 1 Ladies A4 Leahward Folder Ash School Clearance Handbag Fashion gwq8p 2/8/14

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.

Wear Men's Casual Khaki Shoulder Canvas Bag Travel Diagonal Backpack Eqrgqw Living Without Sudo 11/29/13
Olive Shoulder Gift Of Terrier Dog Bag Fawn Choice Cairn Silhouette Colours Reporter w1FBqqP

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

Hello, World! 11/27/13

Welcoming myself to my blog.