7 comments

  • benonsocial 8 minutes ago
    What a fun idea. I can see this being one of those casual "games" that you fiddle with when you're bored. It feels more productive than doom scrolling or playing games. Thanks for sharing!
  • dharmatech 2 hours ago
    Very cool!

    Here's a demo of a library for interactively eliminating variables from sets of equations:

    https://youtu.be/7ysUdxTfKhU?is=lE5o9Besk1XNnggP

    Source:

    https://github.com/dharmatech/combine-equations.py

    The interactive gui part starts at 4:08. Before that is the setup and context of the example.

    If you ever move in the direction of supporting sets of equations and isolating variables, consider using colors to indicate known values and unknown values as is done in this library.

    I test this library on exercises you'd find in college physics (motion, constant acceleration, projectile motion, Newton's laws, etc.) since these involve sets of equations and eliminating variables so that you have expressions in terms of known values.

    The above demo uses a jupyterlite notebook, so everything runs client side in the browser. No server side kernel necessary.

    To use your interactive fluid style in this library to eliminate variables, I could see the user first isolating that variable. Then dragging that variable they want to eliminate over an instance of that variable in another equation. So that's effectively the user saying "replace this variable with this expression".

    • dicroce 1 hour ago
      I will definitely consider using more color... hmm...
  • senkora 3 hours ago
    This is awesome. Congrats on shipping!

    The nearest thing that I've heard of is Wolfram Alpha's step-by-step solution solvers, but the worry with those is always that it's too easy for the student to just keep clicking next step and not learn anything.

    I appreciate how this frames algebra as a puzzle instead of a problem :)

    The Wolfram thing: https://www.wolframalpha.com/examples/pro-features/step-by-s...

    Specifically this one: https://www.wolframalpha.com/input?i=find+t+for+t%5E2+%2B+3t...

  • siraben 2 hours ago
    This is very cool! I'd like to see a version for theorem proving/equational reasoning as well because I think the ideas behind reasoning about functional programs and proving properties about them are just many cases of rule-applying but people don't staring at equations or jump straight to a theorem prover, whereas a visual interface might make the transition a lot easier.
  • bobajeff 4 hours ago
    I watched the video. I think I've been wanting something like this recently but there's not really a name for this sort of thing that I know of.

    Relatedly, I've been working on a step-by-step solver/calculator but I just use sympy (via pyodide) + mathlive. But I'm starting to see the limitations of running Python in the browser and am starting to look at js libraries now.

    • dicroce 4 hours ago
      The underlying math engine is written in typescript and is open source:

      https://github.com/dicroce/wyrm_math

      Probably it's most important feature for applications like this is that the id's of elements in the equations are stable (meaning, if an X has an id of 123 and a transformation moves it to the other side of the equals sign, it still has id 123... this allows you animate between states if you wish).

  • jdthorpe 1 hour ago
    [dead]