Marcelo de G. Malheiros
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mgmalheiros.bsky.social
Marcelo de G. Malheiros
@mgmalheiros.bsky.social
530 followers 430 following 14 posts
Patterns. Simulation. Graphics. Compilers. Creative Coding.

mgmalheiros.github.io

PhD in Computer Science. Academic researcher at UEM.

Also at https://mathstodon.xyz/@mgmalheiros
Posts Replies Media Videos
Reposted by Marcelo de G. Malheiros
neal.fun
Made a site comparing the sizes of living things :)

The great Julius Csotonyi spent 5 months painting over 60 illustrations for the site, no ai used

> neal.fun/size-of-life/
December 10, 2025 at 4:03 PM
Reposted by Marcelo de G. Malheiros
iquilezles.bsky.social
If you only needed to serialize 64x64 pixel PNGs, you could use this:
December 11, 2025 at 1:23 AM
Reposted by Marcelo de G. Malheiros
dj-acid-reflux.bsky.social
6. "My Pagan stoner-psych concept LP 'Brutalist Dystopia Doomchurch' was a massive commercial and critical flop but at least everyone agreed the cover photo was fucking brilliant."
The Daymark: a 19th Century shipping tower near Kingswear, Devon
November 17, 2025 at 8:39 AM
Reposted by Marcelo de G. Malheiros
demofox.bsky.social
Gigi v1.01.7 Released - Gigi Multimedia Edition!

Microphone, speaker, and web cam support.

See release notes for more details:
github.com/electronicar...
The gigi browser showing techniques for the new functionality: microphone, speakers, webcam.
December 10, 2025 at 5:40 PM
Reposted by Marcelo de G. Malheiros
nicoptere.bsky.social
noise functions in TSL threejsroadmap.com/blog/10-nois...
threejsroadmap.com
December 9, 2025 at 9:54 PM
Reposted by Marcelo de G. Malheiros
animalphotorefs.bsky.social
Love to see the Sedgwick County Zoo putting out a good explainer on why GenAI slop videos of animals are a problem & how to identify them! It’s succinct, easy to read, and doesn’t shame people for not knowing better. A+ useful link to share with family and friends.

scz.org/blog/the-rea...
The Reality of AI Animal Content – Sedgwick County Zoo
If you spend any time on social media, you’ve probably seen them – bears bouncing on trampolines, apes caught on doorbell cameras, or “rescued” wild animals acting in ways that seem too good to be…
scz.org
December 9, 2025 at 2:44 AM
Reposted by Marcelo de G. Malheiros
akiyoshikitaoka.bsky.social
www.psy.ritsumei.ac.jp/akitaoka/pri...
December 10, 2025 at 12:27 AM
Reposted by Marcelo de G. Malheiros
samwho.dev
Had an idea last week to make a tool that shows what answers a model can give for a given prompt. Used this downtime day to explore the idea and the results are fun. This isn't sampling, it deterministically enumerates the search space. Prompt was: "In what year was Barack Obama born?"
A screenshot of a terminal table showing the top 20 answers to the question "In what year was Barack Obama born?". They are as follows: Rank 1: 22.61% — “Barack Obama, the 44th President of the United States, was born on August 4, 1961.” Rank 2: 16.77% — “Barack Obama, the 44th President of the United States, was born on January 20, 1961.” Rank 3: 9.24% — “Barack Obama was born on August 4, 1961.” Rank 4: 7.06% — “Barack Obama was born on January 20, 1961.” Rank 5: 4.70% — “Barack Obama was born in 1961.” Rank 6: 4.33% — “Barack Obama, the 44th President of the United States, was born on January 16, 1961.” Rank 7: 4.08% — “Barack Obama, the 44th President of the United States, was born in 1961.” Rank 8: 1.93% — “Barack Obama, the 44th President of the United States, was born on November 4, 1961.” Rank 9: 1.38% — “Barack Obama was born on January 16, 1961.” Rank 10: 0.91% — “Barack Obama, the 44th President of the United States, was born on January 18, 1961.” Rank 11: 0.80% — “Barack Obama was born on November 4, 1961.” Rank 12: 0.70% — “Barack Obama was born on 4 February 1961.” Rank 13: 0.61% — “Barack Obama, the 44th President of the United States, was born on January 19, 1961.” Rank 14: 0.58% — “Barack Obama, the 44th President of the United States, was born on January 8, 1961.” Rank 15: 0.41% — “Barack Obama, the 44th President of the United States, was born on 4 February 1961.” Rank 16: 0.40% — “Barack Obama was born on January 8, 1961.” Rank 17: 0.38% — “Barack Obama, the 44th President of the United States, was born on August 4, 1961.” Rank 18: 0.37% — “Barack Obama was born on January 18, 1961.” Rank 19: 0.34% — “He was born on January 20, 1961.” Rank 20: 0.33% — “Barack Obama, the 44th President of the United States, was born on February 16, 1961.”
December 9, 2025 at 4:05 PM
Reposted by Marcelo de G. Malheiros
murrayh83.bsky.social
In March 2025, I continued creating designs with octagons around a central star, but this time using two different block arrangements. #21CenturyPB #iTeachMath
The designs are displayed in a 3 by 3 grid, featuring 3 unique pattern block designs from my March 2025 collection. The first and third columns show the octagons that were used to create the radial designs shown in the middle column. The designs are created by using two differently arranged octagons–the inner layer uses six octagons of the first arrangement, the outer layer uses twelve octagons of the second arrangement.
December 9, 2025 at 7:32 PM
Reposted by Marcelo de G. Malheiros
scottbot.bsky.social
My colleague points out here that possibly one in seven requests to our library now may be assisted by LLMs.

When those point to fictional documents, that's a huge staff time drain. There's often no quick way to check if an undigitized primary source doc exists beyond physically pulling some boxes.
December 9, 2025 at 2:06 AM
Reposted by Marcelo de G. Malheiros
anneapplebaum.bsky.social
Smugglers, money launderers and sanctioned people once relied on diamonds, gold and artwork. Now, criminals have a far more practical alternative: stablecoins, a cryptocurrency tied to the U.S. dollar that exists largely beyond traditional financial oversight.
www.nytimes.com/2025/12/07/t...
How a Cryptocurrency Helps Criminals Launder Money and Evade Sanctions
www.nytimes.com
December 7, 2025 at 3:00 PM
Reposted by Marcelo de G. Malheiros
nsousanis.bsky.social
The birth of our solar system - at last, closing up the penultimate page of this mammoth chapter exploring the origin of the universe in all its swirls of different sorts... It's been a long trip. And there is, to be sure, a lot going on on this page :)
Onward!
#Nostos #Unflattening 2
A comics page in 30 (ok, technically 33) panels - arranged five wide by six tall. We see the birth of the solar system unfold - beginning with a gas cloud in space, which is then shocked into collapse by a supernova explosion far off. The gas collapses on itself and begins to swirl. We see it gather material into its center, which heats up - and a thin disk spreading outward - with rock close to it and ice and gas and rock spread farther out. (this was the first two tiers of panels). Third tier - we see bits of dust and rock and ice stick together, then get to bigger pieces and collide, and eventually turn into planetesimals. Next row, a bigger one of these collects tons of gas and ice to itself and becomes the first planet (Jupiter) and we see the others (and some that are no longer around) form. Fifth row - these planets clear remaining dust and rock from their orbital lanes, but still pretty chaotic. a panel split into four - showing in half the collision that turned Uranus on its side, and the other showing the collision that stripped Mercury of its outer layer. We also see diagrammatically how Jupiter and Saturn moved in closer to sun at some point and then moved back outward - which among other things caused Neptune and Uranus to switch orbits, and then for row 6 - trigged the late heavy bombardment where rocks and ice and gas are flung inward at the inner planets - devastating them - but also bringing gases included water. Finally, the planets reach the more or less current configuration. I drew Saturn with a ring, which it probably didn't have - but only so people knew what it was. I drew earth with one giant continent as it might've been - but you can't really tell anyhow, the drawing is too tiny. I would've put water on Mars but I felt that would confuse everyone.
December 6, 2025 at 8:14 PM
Reposted by Marcelo de G. Malheiros
hackernewsbot.bsky.social
An Interactive Guide to the Fourier Transform | Discussion
An Interactive Guide To The Fourier Transform – BetterExplained
betterexplained.com
December 7, 2025 at 5:20 PM
Reposted by Marcelo de G. Malheiros
hackernewsbot.bsky.social
A series of tricks and techniques I learned doing tiny GLSL demos | Discussion
A series of tricks and techniques I learned doing tiny GLSL demos
blog.pkh.me
December 8, 2025 at 7:00 PM
Reposted by Marcelo de G. Malheiros
rokojori.com
Godot Tutorials Update 2025!

I updated my tutorial pages and added a lot of new stuff. I hope you find it usefull. I think there are almost 100 tutorials in there ^^ And only the good ones :)

#Godot #GodotEngine #GameDev #IndieDev #IndieGameDev #Tutorials
December 7, 2025 at 7:56 PM
Reposted by Marcelo de G. Malheiros
davidleavitt.bsky.social
Wish I knew someone who liked Battlestar Galactica as much as I do
December 7, 2025 at 8:15 PM
Reposted by Marcelo de G. Malheiros
leahwrenn.bsky.social
New sculpture! (Actually a study for a bigger version)

Icosaskeliohedron, with embedded planar faces

Translucent green PLA

#mathart
#ArtAdventCalendar
View of a fluorescent green slightly translucent icosahedral sculpture, looking down a rotational 3-center Same sculpture centered on a 5-center poking out of the sculpture A third view of the sculpture, emphasizing its translucency
December 7, 2025 at 8:19 PM
Reposted by Marcelo de G. Malheiros
helsig.bsky.social
An old experiment with new coloring. An interlaced knot pattern with ribbon width that diminishes towards center.
#MathArt
An interlaced knot pattern. Colored in warm gradients.
December 5, 2025 at 10:34 PM
Reposted by Marcelo de G. Malheiros
ccanonne.github.io
Reminder! Never attribute to Malice that which should be attributed to Malice et al. (2007).
December 5, 2025 at 10:53 PM
Reposted by Marcelo de G. Malheiros
godotengine.org
Two development snapshots in one week? Such speed! 🚀

#GodotEngine 4.6 dev 6 has arrived, and with it comes the feature freeze. Join us for one last round-up before beta:

godotengine.org/article/dev-...
Dev snapshot: Godot 4.6 dev 6 – Godot Engine
Feature freeze is here; time for one last round-up!
godotengine.org
December 5, 2025 at 11:45 PM
Reposted by Marcelo de G. Malheiros
joesodium.bsky.social
Four #procgen snowflakes from the past 24 hours
December 5, 2025 at 4:48 PM
Reposted by Marcelo de G. Malheiros
hackernewsbot.bsky.social
Sam Altman's Dirty DRAM Deal | Discussion
Sam Altman’s Dirty DRAM Deal
Or: How the AI Bubble, Panic, and Unpreparedness Stole ChristmasWritten by Tom of Moore’s Law Is DeadSpecial Assistance by KarbinCry & kari-no-sugataBased on this Video: https://youtu.be/BORRBce5TGwIntroduction — The Day the RAM Market SnappedAt the beginning of November, I ordered a 32GB DDR5 kit for pairing with a Minisforum BD790i X3D motherboard, and three weeks later those very same sticks of DDR5 are now listed for a staggering $330– a 156% increase in price from less than a month ago! At
www.mooreslawisdead.com
December 6, 2025 at 1:00 AM
Reposted by Marcelo de G. Malheiros
prakharj.bsky.social
Recently had the chance to hear @carlbergstrom.com on information foraging in the current space of LLMs.

He and @jevinwest.bsky.social have crafted a course that touches various facets of LLMs. Just finished reading through its 18 modules. Absolutely loved it!

thebullshitmachines.com
Modern-Day Oracles or Bullshit Machines: Introduction
A free online humanities course about how to learn and work and thrive in an AI world.
thebullshitmachines.com
December 6, 2025 at 5:36 AM
Reposted by Marcelo de G. Malheiros
hushuo.bsky.social
I finally got around to reading this. You should read it too.

"We are exporting the very labor of teaching and learning—the slow work of wrestling with ideas, the enduring of discomfort, doubt and confusion, the struggle of finding one’s own voice."

www.currentaffairs.org/news/ai-is-d...
AI is Destroying the University and Learning Itself
Students use AI to write papers, professors use AI to grade them, degrees become meaningless, and tech companies make fortunes. Welcome to the death of higher education.
www.currentaffairs.org
December 4, 2025 at 1:52 PM
Reposted by Marcelo de G. Malheiros
andrewstraw.bsky.social
Have you ever wondered what you would find if you could keep your eyes on a bee for more than a few meters? Us, too!

preprint (with videos!) + thread 🧵

Precise, individualized foraging flights in honey #bees 🐝 revealed by multicopter drone-based tracking

www.biorxiv.org/content/10.6...

1/9
December 6, 2025 at 2:01 PM