Casimir Wierzynski
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casimir.net
Casimir Wierzynski
@casimir.net
53 followers 180 following 0 posts
AI and neuroscience. Learn by doing; do by learning.
http://casimir.net
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Reposted by Casimir Wierzynski
guggenheim.bsky.social
Number 18 by Jackson Pollock, 1950
https://botfrens.com/collections/212/contents/137445
Solomon R. Guggenheim Museum, New York Gift, Janet C. Hauck, in loving memory of Alicia Guggenheim and Fred Hauck, 1991 © 2016 Pollock-Krasner Foundation / Artists Rights Society (ARS), New York
January 13, 2026 at 8:17 AM
Reposted by Casimir Wierzynski
annehidalgo.bsky.social
Il y a un an, nous retrouvions Notre-Dame !

Paris retrouvait son joyau ! ❤️
Façade de Notre-Dame en plein soleil Cérémonie lors de l'ouverture de Notre-Dame Escalier de Notre-Dame Flèche de Notre-Dame
December 7, 2025 at 5:05 PM
Reposted by Casimir Wierzynski
royalsociety.org
Born #OnThisDay in 1867 was Marie Skłodowska–Curie, the first woman to win a Nobel Prize, the only woman to win twice and the only person to win a Nobel Prize in two disciplines: Physics for her work on radioactivity, and Chemistry for her discovery of radium and polonium. #WomenInSTEM
November 7, 2025 at 7:25 AM
Reposted by Casimir Wierzynski
xenaproject.bsky.social
Here's the statement in Lean. How little can one get away with importing in order to prove this? Can it be proved by induction on max(l)-min(l) for example, avoiding the reals completely?
If L is a list of naturals, then its length to the power of its length, multiplied by its product, is at most its sum to the power of its length.
October 26, 2025 at 11:05 AM
Reposted by Casimir Wierzynski
nytimes.com
Eric Lu, a 27-year-old American classical pianist, won the top prize at the International Chopin Piano Competition in Warsaw, beating out 180 competitors.
Eric Lu, an American, Wins International Chopin Piano Competition
In Warsaw, a 27-year-old pianist from Massachusetts beat out 180 competitors to win what some call the Olympics of the piano world.
nyti.ms
October 22, 2025 at 1:40 AM
Reposted by Casimir Wierzynski
andrewcpayne.bsky.social
E11 Bio is excited to unveil PRISM technology for mapping brain wiring with simple light microscopes. Today, brain mapping in humans and other mammals is bottlenecked by accurate neuron tracing. PRISM uses molecular ID codes and AI to help neurons trace themselves.

Read more: e11.bio/blog/prism
October 1, 2025 at 2:16 PM
Reposted by Casimir Wierzynski
mamassian.bsky.social
A nice shift in perceived colour between central and peripheral vision. The fixated disc looks purple while the others look blue.

The effect presumably comes from the absence of S-cones in the fovea.

From Hinnerk Schulz-Hildebrandt:
arxiv.org/pdf/2509.115...
An array of 9 purple discs on a blue background. Figure from Hinnerk Schulz-Hildebrandt.
September 24, 2025 at 12:04 PM
Reposted by Casimir Wierzynski
guggenheim.bsky.social
Several Circles by Vasily Kandinsky, 1926 #artbots #guggenheim
https://botfrens.com/collections/212/contents/137491
Solomon R. Guggenheim Museum, New York Solomon R. Guggenheim Founding Collection, By gift © 2016 Artists Rights Society (ARS), New York/ADAGP, Paris
September 1, 2025 at 10:12 PM
Reposted by Casimir Wierzynski
cianodonnell.bsky.social
incredible Ada Lovelace quote highlighted in a talk by Steve Furber. She spells out the dream of computational neuroscience, 2 centuries ago. The sheer ambition 🤩
Steve Furber powerpoint slide showing picture of Ada Lovelace and a quote: "I have my hopes, and very distinct ones too, of one day getting cerebral phenomena such that I can put them into mathematical equations--in short, a law or laws for the mutual actions of the molecules of brain. .... I hope to bequeath to the generations a calculus of the nervous system."
August 29, 2025 at 9:21 AM
Reposted by Casimir Wierzynski
amyklobuchar.com
Big crowds, big fun… and even bigger pumpkins. Only at the Minnesota State Fair 🎃
August 27, 2025 at 1:13 PM
Reposted by Casimir Wierzynski
mcsweeneys.net
Prince / Sinéad O’Connor: “Can a Thing Be Compared to a Person? If So, That Person Is Not You”
Pop Music Contrapositives
Nirvana “The Spirit of People Aged Twenty and Older Is Odorless” The Cure “I’m Not in Love, Which Is How I Know Today Isn’t Friday” Bruce Springste...
buff.ly
July 13, 2025 at 1:01 AM
Reposted by Casimir Wierzynski
beetzjerome.bsky.social
Amazing study: @tamir-eliav.bsky.social from the Ulanovsky lab describes replay events in a large scale environment (200 m tunnel). 🦇

www.cell.com/cell/abstrac...
Fragmented replay of very large environments in the hippocampus of bats
Hippocampal replays in bats flying in a 200-m tunnel depict short fragments of long flight trajectories, suggesting constraints on the mechanisms and functions of replay.
www.cell.com
June 14, 2025 at 9:34 AM
Reposted by Casimir Wierzynski
xenaproject.bsky.social
I'm at Big Proof this week. Bhavik Mehta's talk (video not yet up) contained a big surprise at the end: one of the references in a paper he's formalizing is an old 4-page paper about bounds for the ABC conjecture, and the paper has been completely *autoformalized* by Morph Labs' AI model "Trinity".
June 12, 2025 at 3:36 PM
Reposted by Casimir Wierzynski
natureportfolio.nature.com
A package of research papers from the MICrONS (Machine Intelligence from Cortical Networks) consortium in Nature and Nature Methods provides a detailed map of mouse brain cell structure and connections, offering insights into how they relate to activity in the mouse brain. 🧪
The MICrONS Project
An unprecedented dataset of high resolution anatomical images of individual cells in mouse visual cortex, mapped on to their responses. This integrated view of function and structure lays a foundation for discovering the computational bases of cortical circuits.
go.nature.com
April 9, 2025 at 4:36 PM
Reposted by Casimir Wierzynski
zdeborova.bsky.social
Happy to share the recording of my plenary talk at Cosyne 2025 two days ago. You will learn about the statistical physics approach, phase transitions in learning, transformers, sequence models, attention etc. www.youtube.com/watch?v=PurZ...
Cosyne 2025 - Session 6: Neural network theory
YouTube video by Cosyne Talks
www.youtube.com
March 31, 2025 at 10:53 AM
Reposted by Casimir Wierzynski
apeyrache.bsky.social
Exciting new paper from David Dupret's lab, showing that hippocampal CA1 ripples can be categorized in 2 types, either driven by CA3 or entorhinal inputs, & are associated with different replay content.
The categorization only requires pyramidal layer recording.

www.biorxiv.org/content/10.1...
Hippocampal Ripple Diversity organises Neuronal Reactivation Dynamics in the Offline Brain
Hippocampal ripples are highly synchronized neuronal population patterns reactivating past waking experiences in the offline brain. Whether the level, structure, and content of ripple-nested activity ...
www.biorxiv.org
March 19, 2025 at 10:11 AM
Reposted by Casimir Wierzynski
guggenheim.bsky.social
Graceful Ascent by Vasily Kandinsky, 1934
https://botfrens.com/collections/212/contents/137770
Solomon R. Guggenheim Museum, New York Solomon R. Guggenheim Founding Collection © 2016 Artists Rights Society (ARS), New York/ADAGP, Paris
March 19, 2025 at 2:02 PM
Reposted by Casimir Wierzynski
jacobparresau.bsky.social
My first project in the @elowitzlab.bsky.social is finally out in @cellpress.bsky.social! We explore how competitive, "many-to-many" dimerization allows complex, multi-input, and cell-type-specific biochemical computations🧵↓

doi.org/10.1016/j.ce...
Redirecting
doi.org
February 26, 2025 at 2:17 AM
Reposted by Casimir Wierzynski
alleninstitute.org
New study in @cellpress.bsky.social by Allen Distinguished Investigator @elowitzlab.bsky.social and collaborators explores the versatility of protein dimers. #FrontierScience

🔗 www.cell.com/cell/fulltex...
February 19, 2025 at 6:42 PM
Reposted by Casimir Wierzynski
royalsociety.org
Nicolaus Copernicus was born #OnThisDay in 1473. His work marked the start of the Copernican Revolution and the paradigm shift from a geocentric model of the cosmos, with the Earth at the centre, to a heliocentric model with the planets orbiting the Sun. #HistoryOfScience
February 19, 2025 at 2:36 PM
Reposted by Casimir Wierzynski
profsera.bsky.social
Please help us get the word out: our 6 wk astrophysics 🧪🔭summer research program for international MSc students is open for application! Note this is aimed at students from disadvantaged regions or under-represented groups in astro! I will host one position on black holes ⚫️!

aspire.science.uva.nl
ASPIRE
aspire.science.uva.nl
February 19, 2025 at 11:33 AM
Reposted by Casimir Wierzynski
nspruston.bsky.social
I’m excited about this collaborative project by @sunw37.bsky.social, @johanwinn.bsky.social, and many other talented contributors. Read about how our @hhmijanelia.bsky.social team imaged thousands of neurons in mouse hippocampus as mice learned cognitive tasks over several days: hhmi.news/4hXIp7r
February 13, 2025 at 1:45 PM
Reposted by Casimir Wierzynski
kumail.bsky.social
Always blue.
Kumail Nanjiani with Martin Starr. Both look happy because they both are happy.
February 6, 2025 at 6:42 PM
Reposted by Casimir Wierzynski
theonion.com
Department Of Interior Bans Unlikely Animal Friendships
theonion.com/departm...
Department Of Interior Bans Unlikely Animal Friendships
WASHINGTON—Fulfilling a campaign promise made by President Donald Trump, the U.S. Department of the Interior announced Wednesday that it was enacting a ban on unlikely animal friendships, effective immediately. “Starting today, any animal found frolicking or snuggling with an animal of another species—for example, a chimp cuddling a puppy or a magpie preening a pig—is […]
theonion.com
February 6, 2025 at 2:00 PM
Reposted by Casimir Wierzynski
mcsweeneys.net
God said, “Before Genesis may rise to greatness, there must be another, a singer, to create inter-band conflict.” So God created Genesis’s first singer and frontman, and he called this singer “Peter Gabriel.”
The Book of Genesis’s Genesis: The Genesis of the Band Genesis
In the beginning, music was a formless and empty void. Then God created Genesis. And God said, “Let there be Phil Collins,” and there was Phil Coll...
buff.ly
February 1, 2025 at 2:00 AM