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It's New Year's Day in Stack Exchange land... A distinguishing characteristic of these sites is how they are moderated: We designed the Stack Exchange network engine to be mostly self-regulating, ...

what's the error I got here? why it is wrong? How should I make this right for post?

i have establish the ODE model and in order to simplify the question,I just want to put the ODE, but when I get the ODE from mma, how can I paste it to mse? codes are as this G = m*g; d1 = (m)/(rho*...

In Why does this stiff BVP return unevaluated but a similar IVP produce a solution?, I addressed a somewhat common problem with NDSolve, namely that when the shooting method fails due to stiffness or ...

@kickert posted an answer here but I think it should be a separate question. Anyone attending the Wolfram Technology Conference in Champaign? Perhaps a meet up?

When copying Wolfram language commands from Notebook front end to stack exchange how do you format here? For example, \!\( \*UnderoverscriptBox[\(\[Sum]\), \(\[Eta] = 1\), \(\[Tau]\)] \*FractionBox[ ...

I have a more general question regarding StackExchange (Sorry if this is not the right place to post such a "meta-question"): When I use a code posted here for, lets say, doing some research and I ...

Nearly every day, I see a question I suspect of being a duplicate. Sometimes I find a dupe, sometimes not. Common problems are so familiar to many of us that we know whether a given question has ...

Re Why can I write 2x as alternative to 2 x?. Looking at the timeline we can see that it was closed as primarily opinion-based and then edited. It entered the reopen queue, where the two users that ...

Could anyone tell me why the site keeps telling me that "Your post appears to contain code that is not properly formatted as code. Please indent all code by 4 spaces using the code toolbar ...

I wonder what happened to the idea of our own community blog. Several volunteers had agreed to provide good content. The discussion was promising, and I wonder if anything had come out of it because ...

My question is mainly inspired by the question about Mathematica as LaTeX editor that judging by the vote counts has been somehow controversial. We already have a guide on promotion titled "How to ...

Earlier this year there have been discussions about the creation of an "Open Bugs" database for the Wolfram Language / Mathematica. For example, this was discussed one or more times during one of ...

A spurious question today, now gone, was tagged mathworld, which led me to look into the tag. It had only one question, and I considered removing the tag from the question. The question was about ...

I was just trying to ask a question but when I started to paste the equations I got disp = {u[r, z], w[r, z]}; ddisp = { \!\(\*SuperscriptBox[\(u\), TagBox[ RowBox[{"(", RowBox[{"1", ",", "0"}], ")"...

I come from C programming, and as clear as they may be, I do not understand many of the examples in the documentation. Would it be on topic to ask for a C "translation" of some examples?

A while ago, I reported a bug in Mathematica and I got an official response which confirmed its existence and promised to take care of it. Now that the new version of Mathematica (12.0) has been ...

I find myself never writing documentation. This isn't because the tools don't exist, but rather because writing full-fledged Mathematica documentation is tedious with linking, example writing, ...

I have developed a package that I think might be of general interest to a wide range of Mathematica users, and could lower the barrier to attracting new users. I am not certain that it is at the stage ...

I wonder whether feature requests for the Mathematica system are allowed on the main site or on the meta site?

I've noticed that the symbol list for syntax highlighting doesn't include many symbols that are new in version 12. For example: You can see that Reverse is highlighted correctly, while SubsetMap is ...

Important for StackExchange staff! We were approached by Stephen Wolfram, creator of Mathematica, through one of his employees who is a regular user here. He asked if our community can consider ...

It's safe to say that after quite a discussion, the general consensus is that we should add "Wolfram Language" as sub-text to our header image. Now, the question is what exactly should we put there. I ...

Voting is now taking place in the following Q&A to determine which header image to use: Site Logo Text: Mathematica and XXX. Which wording exactly? Recently, Arnoud asked in our chat if it is ...

I am trying to post this question on Mathematica StackExchange but I am getting an error that my code is not properly formatted. I double-checked every line for some time now, but I cannot find an ...

I have noticed lately quite a few questions from new users that are unfortunately unanswerable because they do not contain enough detail, or code, or data. Rather than re-hashing the usual comments ("...

I like to have at least one side project going at all times and often get bored with one and would like to play with another. Sometimes I find myself (as now) unable to come up with an inspiring, ...

I'm not sure we already have something similar, but I'm working on more code inspections for the IntelliJ plugin and it's always a good idea to ask the community. Since it doesn't really fit on main, ...

I was looking for a duplicate post for this question today, and I figured there must be an answer in the Pitfalls post about the issues that come up with using functions like NumberForm and MatrixForm ...

There exist many related posts, but has it ever been explained in a clear and detailed enough way? Notice a variant of the question in title is Why doesn't lst = {a, b, c}; Thread[Unevaluated@f[...

2019 is here! And with the new year, as usual, comes a new iteration of Community Promotion Ads! Let’s refresh these for the coming year :) What are Community Promotion Ads? Community Promotion Ads ...

I have to ask a question about WolframAlpha itself: Can I ask it on the site?, or is it off topic.

I understand that conceptually precision and accuracy are quite distinct, but pragmatically tags precision and accuracy appear to be redundant: precision Questions dealing with the relative ...

People often ask me*, "Kuba how come you can so quickly find duplicates? It appears tough in this syntax rich environment." If a question feels like a duplicate or a one that is already answered, it ...

I asked a question that ended up having two separate parts, and managed to obtain (with the subsequent help of Wolfram Technical Support) answers to both: Combining pure functions containing compound ...

It's New Year's Day in Stack Exchange land... A distinguishing characteristic of these sites is how they are moderated: We designed the Stack Exchange network engine to be mostly self-regulating, ...

Links in comments (and maybe in answers) in the short form do not show up in the "Linked" questions list in the right sidebar: https://mathematica.stackexchange.com/q/nnn Links that use the full ...

Dear Community members, I am playing with the idea of writing a textbook, and I am asking for advice of those who have done such work. The question is about the technical side. I have seen a couple ...

In the new site, I cannot find the search machine. Where is it?

With the new site design I am experiencing a problem with comment time-stamps. As the page is loading they appear normally, following the user name, but after the page has loaded they disappear. The ...

There is a certain user, let's call them A., that has the tendency to comment on every post that mentions Schwartz distributions, usually accompanied by a downvote. These comments are completely ...

We have a new design for our site and it should be rolled out to everyone soon. There are still things that could be tweaked, but in general, I like it very much. This post is to discuss the things ...

I have on several occasions used this site to report bugs or flaws with Mathematica, usually when a newer version does something worse than an older version. Inevitably it is met with attitude that "...

The new site theme rollout may not be everyone's cup of tea. It's certainly not mine. What strategies are there for getting a cleaner site layout which focuses on what we care about?

As part of implementing the new unified themes across the network, we're gradually rolling out updated site themes for each site. As of today, we have enabled your updated site theme for testing. If ...

Currently there are 131 questions with the tag eigenvalues. This includes both questions around the finding of eigenvalues and eigenvectors of a matrix as well as of a differential operator (and ...

Some answers have nice animations, for example. I have been looking round meta to get guidance on how to post animations and not found any. Is there a post on how to do this? Edit Thanks to ...

My problems are solved thanks to an answer in the comments. I also would like to provide official recognition by accepting this answer, but I can't.

I am curious who all is currently attending the Wolfram Technology Conference in Champaign. Would love to put a face with a name for the people I have learned from on SE. Perhaps a meet up? Or feel ...

Several times now I have seen a red dot on the left of an item in the review queue drop-down menu, but when I click on that item, I am told the queue is empty. So why am I seeing a red dot, which I ...