Michael Orger

YouTube video by P̳̿͟͞r̳̿͟͞o̳̿͟͞x̳̿͟͞i̳̿͟͞m̳̿͟͞a̳̿͟͞ Teodor Zajder 2.76 3x3 World Record

www.youtube.com/watch?v=IR9v... All sorts of cubing records have been broken already in the first weeks of 2026. Here is 9-year-old Teodor Zajder with the first ever sub-3 second official solve!

YouTube video by Zos Khem Thighpaulsandra"The Angelica Declaration"

A track I need to listen to every few weeks and that I think more people could appreciate. www.youtube.com/watch?v=WkSn...

YouTube video by 12edit Manuel Göttsching — E2-E4 (1981/Full album)

www.youtube.com/watch?v=Vq-k... still getting my head around the fact that this monumental album was allegedly recorded in a single take.

No offense intended! Obviously in this case there should have been better communication regarding what the book was about from the publisher!

Cover art for John Wynham's The Chrysalids depicting an alien that has nothing to do with the book.

I remember reading this edition, which is a great example of what happens when no one involved in creating the cover art had actually read the book.

"These results show that spontaneous activity in the vertebrate brain is highly stereotyped at the level of functional cell assemblies and can be reliably captured through a common latent code."

New work from Volker Bormuth Lab @sorbonne-universite.fr 🐟🧠

Interestingly, all of the top 100 average results are held by competitors 12 and under!

YouTube video by CubeRoot Sub3.90 Milestone! 3.84 3x3 WR Avg Xuanyi Geng🇨🇳 | Rubik's Cube World Record | Beijing Winter 2026

Watch 8-year-old Xuanyi Geng clutch the world record for Rubik's cube solving (average) with a 3.37 second solve. Planning: he is planning around 20-25 moves ahead here before he starts to solve. Motor control: he turns the cube faces at 12-13 turns per second. youtu.be/wKm5DfuJJdo?...

A list that has Stoner, Children of Time and The Age of Innocence makes me really curious to read all the rest.

Agreed!

Remembering Adam Kampff, neuroscience educator and researcher Kampff’s do-it-yourself approach inspired a generation of neuroscientists.

Adam Kampff prioritized spreading knowledge over publishing flashy papers in prestigious journals, but colleagues say his mark on neuroscience was undeniable. The researcher and educator passed away on 9 December.

By Lauren Schneider

www.thetransmitter.org/systems-neur...

It is still very much a work in progress, but I know he would be extremely happy to get feedback on any of it (especially suggestions for better proofs). Please feel free to pass it to anyone who might find it useful or interesting.

I wanted to pass on a website my son is working on: maths.orger.org. He was personally frustrated with maths in school, when he was asked to apply knowledge of things he was not yet able to prove to himself, and this inspired him to work on a curriculum where everything is justified in strict order.

This is tough. Adam Kampff was one of the most brilliant people that I have had the privilege to know. He was a wonderful and generous friend and colleague, a remarkable teacher and a visionary who inspired hundreds of others. He was a shining example to us all, and we will miss him very much.

Very excited to share this thread on our recent paper! We show how Zebrafish integrate visual navigation signals in aligned topographic maps. Full thread below🧵

🧠 Applications for the International Neuroscience Doctoral Programme (INDP) @champalimaudf.bsky.social open until 31 January 2026.
☀️ Join our vibrant and international research community in sunny Lisbon!
🔗 fchampalimaud.org/champalimaud...

A global screen for magnetically induced neuronal activity in the pigeon brain How animals detect the Earth’s magnetic field remains a mystery in sensory biology. Despite extensive behavioral evidence, the neural circuitry and molecular mechanisms responsible for magnetic sensin...

Scientists around former IMP group leader David Keays (@lmumuenchen.bsky.social show that #pigeons detect magnetic fields through their inner ear. Their discovery was now published in the journal @science.org: www.science.org/doi/10.1126/...
More: www.imp.ac.at/news/article...

You are not wrong that it is true that if z(ab)=z(a)z(b) is true in binary, your condition will hold in any base - there are just occasional examples where it doesn't hold in the other direction.

Thanks, that looks interesting, though I am not sure if they are equivalent. E.g. 100010010 and 10010001 do not meet the condition of Z being multiplicative in binary, but do meet the condition of your problem in base 3 (product has only ones and zeros. (examples in base 10 might be very long)

I don't know if there is a simpler answer.

If every number in this set is unique (for your case 3,5,6,8,10,11}) the sum will only have zeros and ones. If any number is repeated, you will usually have a digit >1. However there will be some exceptions if the number of repeats is 0 or 1 MOD n, where n is your base.

OK. Well, in that case, I would offer this imperfect answer. Replace the two numbers you have with sets representing the positions of the ones. For your example 11010*100001 this would be {2,4,5} and {1,6}. Consider all the numbers you get from adding pairs of numbers taken from the two sets.

I am interested to see your answer! I can't think of a rule that deals in a simple way with carried digits.

Does your answer depend on the base being ten, or does it apply for any base >2?

🎉 Excited to share our new preprint presenting a complete de novo assembly of the zebrafish genome; a major advance for zebrafish genomics and research! 🧬
Full paper: www.biorxiv.org/content/10.1...
@zebrafishrock.bsky.social @izfs.bsky.social @zfinmod.bsky.social @modelzebrafish.bsky.social

Thanks, David!

Simons Foundation Announces Fourth Class of Pivot Fellows The Simons Foundation is pleased to announce the fourth class of its Pivot Fellowship.

I’m honored to be named a 2025 @simonsfoundation.org Pivot Fellow! This support will allow me to build expertise in dynamical systems and control theory with mentorship from Guillaume Hennequin (@GJEHennequin on X).
www.simonsfoundation.org/2025/11/13/s...

🧠In this essay Carlos Ribeiro and Albino J. Oliveira-Maia, @champalimaudf.bsky.social, explore the brain-body interactions.

🤝Their collaboration bridges fundamental and clinical science, reminding us that progress comes from a joint effort between the two.

👉 www.fchampalimaud.org/news/how-sci...

🚨Big news!🚨
The lab is relocating to Lisbon, joining a great team of experimental and theoretical neuroscientists, and the Neurotechnology Warehouse, a new initiative to bridge basic and translational research.

I'll be sharing postdoc openings soon. Come join us in this new incarnation of the lab!

The effect of time of day on exam pass rate in this study is quite dramatic. Consider that Edexcel runs some UK international exams as early as 7:30 a.m., which is even outside the range plotted in this study!