I think everything is now upgraded
About to upgrade the server that runs mathstodon.xyz. Server will be up and down for a bit
phew, this conference judges papers on both originality and innovativeness
Intriguing! A brick that's like the 3D analogue of A-series paper: you can cut it in half to produce two bricks similar to the original
Chill maths observation:
I like 98 and 99 because their prime factorisations feel kind of like they've taken different, slightly symmetric routes to almost the same place
Oh my god this is such a rich seam: http://lav.io/2014/05/transform-any-text-into-a-patent-application/ - Using some really impressive looking Python libraries for text processing to mine public domain literature for phrases that fit into Patent titles and claims. Includes awesomely ridiculous patent claims derived from the Communist Manifesto.
Efficient Algorithms for Zeckendorf Arithmetic
Article by Ahlbach, Connor and Usatine, Jeremy and Pippenger, Nicholas
In collection: Easily explained
We study the problem of addition and subtraction using the Zeckendorf representation of integers. We show that both operations can be performed in linear time; in fact they can be performed by combinational...
The Bulgarian solitaire and the mathematics around it
Article by Vesselin Drensky
In collections: Easily explained, Games to play with friends, History, Puzzles
The Bulgarian solitaire is a mathematical card game played by one person. A pack of \(n\) cards is divided into several decks (or "piles"). Each move...
The paramagnetic and glass transitions in sudoku
Article by Williams, Alex and Ackland, Graeme . J.
In collection: Basically physics
We study the statistical mechanics of a model glassy system based on a familiar and popular mathematical puzzle. Sudoku puzzles provide a very rare example of a class of frustrated systems with a unique groundstate without...
I wonder if some crazy mathematician ever thought of talking to a number as if it was a friend... (Because numbers are friends?)
oh, you like Mikhail Gromov? name five of his papers
Genuinely assumed this was about Prince William and really couldn't work out what the banks could possibly be doing.
Another attempt at setting up a mastodon development environment, another dismal failure.
This time: `rails db:setup` fails with "must be owner of relation account_domain_blocks". mastodon is the owner of that table. 🤷♂️ Postgres gives such terrible error messages!
I've turned account registration on mathstodon.xyz back on. I'm going to spend some time today thinking about how to deter spammers.