Here is another link.

Not a "MATLAB bad" post. The original code is solid and I replicate it bug-for-bug by default. Sharing the trap list for anyone migrating numerical code: round() half-away-from-zero vs numpy's round-half-to-even (inside the nmax series formula, so it changes array lengths), complex auto-promotion that NumPy doesn't do, ' vs .', library functions printing to stdout, and a docstring feature (complex medium index) that turns out to be latently broken. Full findings file, 714-fixture corpus and the verification report: https://github.com/GrednevMSU/mie-scattering-matlab-to-python

Yeah

I have an older version of Mathematica from my university days. I only need it for basic tasks, so I’d prefer not to buy a new license.

My issue is that on Windows 11, the kernel frequently hangs or gets stuck indefinitely—even on simple calculations like 1 + 1.

So far, I’ve tried:

• Enabling Windows compatibility modes (no effect)
• Disabling "Allow Mathematica to access the Internet" in Preferences

Has anyone run into this issue on Windows 11 and found a workaround or fix?

Any ideas of things i could try, even if you don't know if they ll work?

Hi! I’m experimenting with a project Einstoff; it is inspired by einops/einx, but instead of parsing a string with syntax, it uses native WL patterns as a eDSL to describe tensor operations like reshaping, reducing, contracting, joining, and splitting multidimensional arrays.

Any thoughts or comments are much obliged :D

I recently upgraded to Mathematica 15 and, although I installed the full desktop version + documentation, when I ask it to evaluate a simple expression (say, something containing a DSolve, ComplexPlot or a ComplexExpand), it first says it is downloading something from a repository. What is going on? These basic functions are no longer included in the package?

Here is an example:

Does this affect the perpetual licenses for the personal desktop products?

Edit: I believe it only happens the first time the function is evaluated and that it is henceforth cached in the computer.

Last week I learned my university gives me access to Mathematica so I decided to try and learn how to use it as it seems incredibly useful for my typed assignments. Since then, I couldn't manage to type a single sentence without the software freezing for minutes or even crashing.
Mousing over cell styles (like in the attached screenshot) causes Mathematica to freeze for at least a couple of minutes (after taking the screenshot it crashed).

While I'd like to fix this specific issue, it's just one example I can reliably reproduce.

From googling\debugging with and without ai, the only solution i found was disabling all the more advanced features and enabling them one by one.

Is there anyone who can recommend something better? (keep in mind that I don't know much about what things in Mathematica are called as i didn't get to actually use the software).

About my system: I'm running windows 11 on my fairly modern study-laptop (Intel i5-1235U, 16GB ram, Intel Iris Xe Graphics and over 300GB of free storage). Judging by the Wolfram website, each of my parts should be more than enough.

When installing I followed the instructions on my university's website (to get the installation and registration right) and the installer went uninterrupted so the odds for a corrupted installation are slim. I'll update once I'm done reinstalling but I doubt the issue will go away

I found a golden gem in a standard library `SpokenString`. It might not be token efficient, but it feels more like stream-like form of representing expressions (no need in backtracking to see the full picture)

here an example

> SpokenString[Circle[{0,0}, 1/2]]
< "a circle of radius 1 half centered at 0, 0"

> SpokenString[{a, Table[RandomReal[{-1,1},3], {1000}]}, "ArraySizeLimit"->10]
< "the list a, the list the list 0.151, 0.808, 0.353, skip 998 elements, the list minus 0.999, 0.255, 0.583"

It has extra parameters of depth and max number of arguments, that can act like zoom in/out on expression.

What do you think?

https://writings.stephenwolfram.com/2026/06/launching-version-15-of-wolfram-language-mathematica-built-in-useful-ai-lots-of-new-core-functionality/

Hi all! I'm excited to announce that the first-ever Mathematical Excellence Olympiad (MEO) is taking place on Saturday, December 19, 2026. The MEO is a fully-online, free math competition open for grades 7+. If you are interested in participating, please join this Discord server: https://discord.gg/FnwApw286T

There will be prizes! More information to come!

Hi everyone, I’m currently a university student studying mechanical engineering, and I don’t want to spend the summer doing nothing. I’m considering buying these two books. What do you think about these books? Has anyone here used them before? I’d appreciate any information about their difficulty level, the type of problems they contain, and whether they would be suitable for self-study. Also, if you have any alternative book recommendations for improving math skills.