Trevor Gunn
• Member for 4 years, 9 months
• Last seen this week

## 18 Answers

3 votes

Flag it for the moderators and ask them to convert it back from community wiki.

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13 votes

This is possible using the HTML extension $$\require{HTML} \style{display: inline-block; transform: rotate(45deg)}{\Box}$$ $$\require{HTML}\style{display: inline-block; transform: rotate(45deg)}{\Box}... View answer Accepted answer 3 votes Click the link in Wikipedia's table of contents. This will change the URL in your web browser to something like https://en.wikipedia.org/wiki/MathJax#Features. Use this link with the #. Alternatively,... View answer 15 votes View answer Accepted answer 26 votes From a purely practical point of view: how you answer an older question might be different than how you answer a new question. Is frowned upon to do so? There's nothing frowned upon. The only ... View answer Accepted answer 4 votes The bold parts are what make this on-topic: I have encountered the term derivate standing in for derivative many times in posts. I usually edit the post to say derivative instead. But I am ... View answer Accepted answer 11 votes A linked question contained some malicious code in the title. I've removed it. View answer Accepted answer 9 votes Reading the question it is entirely unclear what the asker knows and does not know. For instance: do they know what \mathbb{Z}/3\mathbb{Z} is? If you read the comments under your answer, it would ... View answer 10 votes Once you vote on a question or answer you have 5 minutes to undo or change your vote. You can undo an upvote by clicking on the upvote arrow again and likewise with downvotes. After 5 minutes your ... View answer Accepted answer 10 votes Observe that for these questions (among others), the accepted answer uses the definition of the derivative: Find the limit of \lim_{x\to0}{\frac{\ln(1+e^x)-\ln2}{x}} without L'Hospital's ... View answer Accepted answer 3 votes It means it has a score of -3 or less. View answer 2 votes The rule is if you offer multiple bounties on the same question, the minimum spend doubles with each subsequent bounty (50 reputation on the first bounty, 100 reputation on the second, 200 on the ... View answer 5 votes Here's a list of reasons why I found your edit undesirable. Changing the title from a statement to a question is a matter of taste. I don't like edits based on taste because they don't make the post ... View answer 1 votes We should consider adding combinatorial-optimization as a synonym for discrete-optimization. I know people use discrete optimization to mean combinatorial optimization + integer programming but there ... View answer 3 votes Editing the question does not reopen it. Closing and reopening a question is done by a voting process. Users with at least 3000 reputation may cast close and reopen votes. It takes 5 votes to close a ... View answer 4 votes There is a list of extensions here. Some are included already. They are action$$\require{action}\mathtip{\text{hover over this}}{e^x} amsMath/amsSymbols (already included) \begin{align} &...

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4 votes

I think it's silly to have both positive-definite and positive-semidefinite. We don't have a strict-inequality tag. We aren't going to add negative-definite and negative-semidefinite (hopefully). I ...

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4 votes

Looking at the most popular tags I can suggest: calculus * probability * algebra-precalculus combinatorics * geometry elementary-number-theory * functions trigonometry Where a * means that some of ...

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