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Start all of your commands with a comma

https://rhodesmill.org/brandon/2009/commands-with-comma/
143•theblazehen•2d ago•42 comments

OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
668•klaussilveira•14h ago•202 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
949•xnx•19h ago•551 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
122•matheusalmeida•2d ago•33 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
53•videotopia•4d ago•2 comments

Jeffrey Snover: "Welcome to the Room"

https://www.jsnover.com/blog/2026/02/01/welcome-to-the-room/
17•kaonwarb•3d ago•19 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
229•isitcontent•14h ago•25 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
28•jesperordrup•4h ago•16 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
223•dmpetrov•14h ago•117 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
330•vecti•16h ago•143 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
494•todsacerdoti•22h ago•243 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
381•ostacke•20h ago•95 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
359•aktau•20h ago•181 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
288•eljojo•17h ago•169 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
412•lstoll•20h ago•278 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
63•kmm•5d ago•6 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
19•bikenaga•3d ago•4 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
90•quibono•4d ago•21 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
256•i5heu•17h ago•196 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
32•romes•4d ago•3 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
44•helloplanets•4d ago•42 comments

Where did all the starships go?

https://www.datawrapper.de/blog/science-fiction-decline
12•speckx•3d ago•5 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
59•gfortaine•12h ago•25 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
33•gmays•9h ago•12 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1066•cdrnsf•23h ago•446 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
150•vmatsiiako•19h ago•67 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
288•surprisetalk•3d ago•43 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
149•SerCe•10h ago•138 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
183•limoce•3d ago•98 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
73•phreda4•13h ago•14 comments
Open in hackernews

Show HN: Beyond Z²+C, Plot Any Fractal

https://www.juliascope.com/
101•akunzler•6mo ago
I've always been dissatisfied that simple Mandelbrot explorers proport themselves as a Fractal Graphing Calculator. In summer break between semesters, I started making a real graphing calculator, parsing LaTeX to WebGL to let you graph most any combination of z and c.

Fun ones to try include - sin(z^2+c) - c^z - z^{1.7}+c

Also supports animation, just enter any other letter and turn it into a variable. Supports Mandelbrot or Julia Set style calculation.

Use with a graphics card or integrated graphics

Comments

mg•6mo ago
I'm not sure if every fractal can be expressed as an iterative formula f(z,c).

In 2012 I found a fractal by using a fundamentally different approach. It arises when you colorize the complex plane by giving each pixel a grey value that corresponds to the percentage of gaussian integers that it can divide:

https://www.gibney.org/does_anybody_know_this_fractal

akunzler•6mo ago
Good point, this site then supports every (as far as I know) fractal you make with iterations of complex numbers and constant cutoff values, mandelbrot style.

There are surely infinitely many more ways to generate other families of fractals though

akomtu•6mo ago
What's the heck is gaussian integers? I've tried to parse your article, but still confused.
Sharlin•6mo ago
Simply the complex numbers where the real and imaginary parts are both integers. Eg. 0, 3+i, 123-45i, -7+8i. Same as the 2D grid of integer Cartesian coordinates.
mg•6mo ago
You can think of them as the complex equivalents to normal integers.

Complex numbers have two components. If both are integers, the complex number is a Gaussian integer.

bmacho•6mo ago
https://www.google.com/search?q=gaussian+integer
zahlman•6mo ago
> I'm not sure if every fractal can be expressed as an iterative formula f(z,c).

It's also unclear to me that every iterative f(z,c) formula will produce something visually interesting, or indeed that meets the definition of "fractal".

badosu•6mo ago
You can make a fractal out of the state graph of a double pendulum: https://www.youtube.com/watch?v=dtjb2OhEQcU

I don't doubt there could be an iterative formula that maps to it, but I'd be very surprised.

hoseja•6mo ago
Isn't that trivially an iterative formula? You know, the physics solver iterating dT after dT.
OgsyedIE•6mo ago
This was a great nostalgia trip to my days on fractalforums, before the web got much denser. I tried playing around with the settings but I was unable to reproduce the two-dimensional version of Tom Lowe's Mandelbox map, discovered in 2010:

https://sites.google.com/site/mandelbox/what-is-a-mandelbox

There are galleries on the other pages of the site, if anybody is interested.

ttoinou•6mo ago
My favorite alternative to Mandelbrot is the Monkelbrot, I made this 13 years ago (probably I discovered this formula on the old fractalforums.com)

https://www.deviantart.com/titoinou/art/The-42-MonkelBrot-29...

  f(z) = ( (z*c-1)^2 - 1 )^2 - 1 
It features Classic Quadratic Mandelbrots z^2 and also Quartic Brots z^4 in one set, that is apparently connected (I didn't prove this yet...). Also, it doesn't go crazy like others alternative, it stays nicely behaved like the original Mandelbrot set. You can copy paste "( (z*c-1)^2 - 1 )^2 - 1" without the quotes on this site to explore the fractal

It's really fascinating when navigating the fractal to try to understand where would a z^2 minibrot appear vs. where would a z^4 minibrot appear

OgsyedIE•6mo ago
It is tragically the case that most of the archives of fractalforums are irretrievable and lost media. The archive.org copies are very incomplete and the database dumps, as far as my research last year could figure out, are locked behind a group of moderators of an inadequately programmed successor site who don't want to share them, considering the dumps to be a status moat for themselves.
ttoinou•6mo ago
Yeah I was sad about that
pabs3•6mo ago
fractalforums.com seems to be online still, so I just queued a recursive ArchiveBot job to save fractalforums.com to archive.org.
akunzler•6mo ago
The Monkelbrot! https://www.juliascope.com/share/6876dcfda602d0a43f41b2e9

Sounds like I missed out on fractalforums.com :/ oh the webpages lost to the ether

ttoinou•6mo ago
Hehe, I missed the sharing feature thanks.

IIRC it was a user named monk who found a method to generate any Monkelbrot set containing our customized choice of any z^n brots

I found the (2,4) pair the most beautiful

pabs3•6mo ago
https://www.fractalforums.com/ is still online but read-only, but there is also a new forum at https://fractalforums.org/

I just queued an ArchiveBot job to save fractalforums.com to archive.org too.

dejobaan•6mo ago
I like things where you can just jump into the guts and play around. If you spend enough time plinking, you can end up getting an intuitive feel for a system. Also surprised at how many iterations you can crank out these days; I once implemented a Mandel-generator on my TI-81 calculator, and that took forever. Thank you for creating and sharing this!
mreid•6mo ago
As someone who taught myself 68000 assembler as a kid in order to render Mandelbrot and Julia sets quickly it still blows my mind a little that fairly hi-res versions of these can be rendered basically instantaneously in a browser using an interpreted language.
gerdesj•6mo ago
Similar(ish) although I only really got as far as BASIC on a 80286 running DOS 3.something!

I did manage to get something in C to compile and work with hard coded co-ordinates but it took me ages and didn't float my boat but it was rather faster 8) I suppose I'll always be a scripter.

I had a copy of the "Beauty of Fractals" and the next one too (can't remember the name). I worked in a books warehouse as a holiday job before Poly (UK Polytechnic - Plymouth) and I think I persuaded my parents to buy me the first and the second may have fallen off a shelf and ended up in the rejects bin. I got several text books for Civil Engineering too, without even needing to cough drop them myself.

One of the books had pseudo code functions throughout which even I could manage to turn into BASIC code. I remember first seeing a fern leaf being generated by a less than one screen (VGA) program which used an Iterated Function System (IFS) and I think a starter matrix with carefully chosen parameters.

Nowadays we have rather more hardware ...

mreid•6mo ago
I also had to convince my parents to buy me books about fractals. My prized possession as a 15 year old was a copy of Mandelbrot's "Fractal Geometry of Nature". A lot of it went over my head but it had some gorgeous colour plates and interesting sections. I still have it at home some 35 years later.

That also inspired me to write IFS code for ferns, Sierpinski gaskets, and Menger sponges in 68k assembler (after realizing AmigaBASIC was too slow).

bongodongobob•6mo ago
Ha, same. I remember setting Fractint to render something and hoping it would be done when I got back from school.
progmetaldev•6mo ago
I spent many hours experimenting with Fractint, trying to get the inner and outer coloring just right, along with the zoom magnification that I could handle walking away from the computer for long enough to get something interesting. The worst was zooming somewhere that looked interesting, and coming back many hours later to find out you had nothing of value.

I spent my early teen years addicted to Fractint, before I could even really show off my creations except in person to my friends. I still look back at those days as more interesting with computers than now. Maybe I need to go back and write my own software to render fractals (or work on existing fractal software and see if I can improve it). In the mid-2000's, I was using GnoFract4D to render fractals, and the results were far more impressive. A change in GNOME or Ubuntu created an issue with the render window for me, and I ended up abandoning it.

bravesoul2•6mo ago
It might be JITed not interpreted though
brandonpelfrey•6mo ago
A long time ago I tried a version of this (https://github.com/brandonpelfrey/complex-function-plot). Can you add texture lookup to yours? Escape time could map to one texture dimension and you can arbitrarily make up another dimension for texture lookup. Being able to swap in random images can be fun nice demo!
JoshTriplett•6mo ago
This is a lot of fun to play with. However, I managed to find a case where it got extremely slow. I changed z^2+c to z^a+c (a from 1..3), and it suddenly got many orders of magnitude slower.
Eduard•6mo ago
> Fun ones to try include - sin(z^2+c) - c^z - z^{1.7}+c

- the broken formatting confused me.

- couldn't test any of these via copy and paste: c&p doesn't work at least on Chrome Android for the expression input.

nevertheless: very cool. I especially love the parameter animation

KingOfCoders•6mo ago
This is so amazing, I remember running ONE frame of this realtime animation over night (getting to bed and hoping for the best) on a C64 and later it still took a long time on an Amiga (machine code both).

Even learned 3D GFX from an Amiga Fraktal Book (Markt&Technik) - the only Amiga book still on my shelf.