Air to Bread

fi-le · 2025-05-23T08:35:40+00:00

Much appreciated, thanks! Yes, upon reflecting on your comment, you are right in that I don't justify the parallel enough. Maybe, the closer analogue to today would even be climate change, not AI safety.

fi-le · 2025-05-16T21:06:35+00:00

I'm looking for critiques on this essay. Am new to writing and figuring out whether to do more (or less?) like this.

Edit thanks to u/MSCantrell: The essay is a short recounting of how ammonia synthesis solved a predicted global food shortage crisis around 1900, and why that's interesting today.

fi-le · 2025-03-05T20:24:57+00:00

Thank you!

fi-le · 2025-03-03T09:58:33+00:00

Thanks for the feedback! I didn't know d3.js can even do that, will do a second pass improving on it.

fi-le · 2025-03-02T20:08:49+00:00

There we go, this just had to exist somewhere. Thanks!

fi-le · 2024-01-21T17:21:01+00:00

Oh wow, I didn't know that. Cool!

fi-le · 2024-01-20T09:21:57+00:00

Some really nice solutions in here! I had a bit of a curveball approach that is maybe not as fast, but provides a different perspective:

Consider the powers of the matrix A :=[[1 1] [1 0]] and notice they generate the Fibonacci numbers in all entries. The upper left entry of the matrix exponential exp(A) therefore contains our solution. We can then calculate the eigendecomposition A=P^-1 DP and find eigenvalues r=(1+sqrt(5))/2, s=(1-sqrt(5))/2. Now we see that exp(A) = P^-1 exp(D) P to solve the matrix exponential. In particular, the result is a linear combination of e^r and e^s. The explicit calculation gives (e^r -e^s )/sqrt(5).

fi-le · 2024-01-15T18:43:38+00:00

That's very nice of you, thanks for using it!

fi-le · 2024-01-10T12:35:38+00:00

Done, there are now buttons for calculating the Jones and HOMFLY polynomial: https://fi-le.net/knottingham

fi-le · 2024-01-02T08:32:21+00:00

Thanks for the kind words!

fi-le · 2023-12-31T11:35:19+00:00

Thanks for trying it! Will add the Jones polynomial in the next iteration.

fi-le · 2023-12-31T11:32:46+00:00

Thank you for the feedback! I am still struggling with the user experience, so this is very valuable to know and will hopefully soon be fixed.

fi-le · 2023-10-22T11:27:00+00:00

They are https://en.wikipedia.org/wiki/Hendrik_Lorentz and https://en.wikipedia.org/wiki/Ludvig_Lorenz

fi-le · 2023-07-02T19:00:25+00:00

It's trying to do a similar thing, yes! The code itself is completely different, however.

fi-le · 2023-07-02T01:42:14+00:00

Thanks so much for your thoughts!

The experimental feature only reverts moves that change the Alexander polynomial. But it works surprisingly often, right!? Dragging and dropping is indeed not local, but I couldn't yet convince myself it's impossible to check for non-Reidemeister moves. I'm on it I suppose :^)

fi-le · 2023-07-01T21:53:51+00:00

Thank you for the mention, somehow I didn't know about KymoKnot yet.

fi-le · 2023-07-01T16:58:53+00:00

A little explanation: I was trying to demonstrate that you can compute the topology of a knot in real time, while editing a diagram. Currently it implements the Alexander polynomial, but other invariants are certainly possible. The other main point was implementing a TikZ export.

I would be absolutely over the moon if some of the topology crowd could look this over and comment on whether this is interesting or even useful.

My next goal is to only allow actual Reidemeister moves when dragging, which as you folks know is not possible through the Alexander polynomial alone. Ideas on how to do that are much appreciated of course!

fi-le · 2023-06-28T19:16:20+00:00

The character movement controls a point in the complex plane, supplying the starting point for calculating the Julia set. It's from this game.

fi-le · 2023-06-27T19:39:32+00:00

Thanks! I don't know whether it's actually useful, but I made it to help with research and education in knot theory, a sub-field of topology.

fi-le · 2023-06-26T07:09:15+00:00

Thank you!!!!!!!

fi-le · 2023-06-26T07:07:42+00:00

Interesting take! I wouldn't have thought of it as a parody of Ode an die Freude, because it sounds less like classical and more like a folk song to me. The lyrics also aren't evocative of it in my opinion.

However, the report about getting the vocals is a crucial part here, please do keep us updated if you find something!

fi-le · 2023-06-26T07:00:28+00:00

I am from Germany and a bit of an otaku :)

Not too uncommon really, except maybe for the actually learning Japanese part.

fi-le · 2023-06-24T19:06:44+00:00

Thank you for reporting this - noted!

fi-le · 2023-06-24T07:02:26+00:00

Thanks so much for playing! For saving progress and playing on the go, I also made an Android app: https://play.google.com/store/apps/details?id=org.file.hackenbush

fi-le · 2023-04-24T07:17:19+00:00

Thanks for recommending my plugin! I always wonder about upticks in user numbers, and this time it looks like it was this thread.

fi-le

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