Here’s a list of common comments for Math.SE newbies.

I’ve posted them on WordPress.com, but I often got typos after
updating that page.*Without* version control, it’s hard to find out
the cause of such error.

### Questions lacking context

```
[Welcome to Math.SE!](//math.meta.stackexchange.com/a/11168/290189)
Please read [this post](//math.meta.stackexchange.com/a/9960/290189) and the
others there for information on writing a good question for this site. In
particular, people will be more willing to help if you [edit] your question
to include some motivation, and an explanation of your own attempts.
```

### Questions not written in MathJax

```
[Welcome to Math.SE!](//math.meta.stackexchange.com/a/4928/290189) Please
use MathJax. For some basic information about writing math at this site see
e.g. [basic help on mathjax notation](/help/notation),
[mathjax tutorial and quick reference](//math.meta.stackexchange.com/q/5020/290189),
[main meta site math tutorial](//meta.stackexchange.com/a/70559/259305) and
[equation editing how-to](//math.meta.stackexchange.com/q/1773/290189).
```

### Newbies’ combo

```
[Welcome to Math.SE!](//math.meta.stackexchange.com/a/11168/290189)
[Please use MathJax.](//math.meta.stackexchange.com/a/4928/290189) For some
basic information about writing math at this site, see
[mathjax tutorial and quick reference](//math.meta.stackexchange.com/q/5020/290189)
and [equation editing how-to](//math.meta.stackexchange.com/q/1773/290189).
Please read [this post](//math.meta.stackexchange.com/a/9960/290189)
for writing a good question.
```

### Newbies’ pic-question

To avoid excedding the upper limit of 500 characters, I’ve copied
and pasted *several* comments and combined them into one.

```
[Welcome to Math.SE!](//math.meta.stackexchange.com/a/4928/290189)
Please use MathJax and see
[mathjax tutorial](//math.meta.stackexchange.com/q/5020/290189).
Please
[don't use pictures for critical portions](//math.meta.stackexchange.com/a/20529/290189)
of your post. Pictures may not be legible, cannot be searched and are not
viewable to those who use screen readers. Please read
[this post](//math.meta.stackexchange.com/a/9960/290189) for information on writing
a good question. People will be more willing to help if you [edit] your
question to include an explanation of your own attempts.
```

### Image posts

```
Please do
[not use pictures for critical portions](//math.meta.stackexchange.com/a/20529/290189)
of your post. Pictures may not be legible, cannot be searched and are not
viewable to some, such as those who use screen readers.
```

### Text images / Scanned pages from books

```
Please do
[not use pictures for critical portions](//math.meta.stackexchange.com/a/20529/290189)
of your post. Pictures may not be legible, cannot be searched and are not
viewable to some, such as those who use screen readers.
[Scanned pages from books are *forbidden* on SE network](//meta.stackexchange.com/q/155600/259305).
Questions should contain sufficient context so that it is
[answerable with the text alone](//math.meta.stackexchange.com/a/1807/290189).
```

### Displaystyle in question title

```
I have changed the formatting of the title so as to
[make it take up less vertical space](//math.meta.stackexchange.com/a/9686/290189)
-- this is a policy to ensure that the scarce space on the main page is
distributed evenly over the questions. See
[here](//math.meta.stackexchange.com/a/9730/290189) for more information.
Please take this into consideration for future questions. Thanks in advance.
```

### One question per post

```
Please, post only
[one question in one post](//math.meta.stackexchange.com/a/7132/290189).
Posting several questions in the same post is discouraged and such questions
may be put on hold, see [meta](//math.meta.stackexchange.com/q/6464/290189).
```

### Fractions in indices and exponents

```
Please
[don't use `\frac` in exponents or limits of integrals](//math.meta.stackexchange.com/a/5057/290189).
It looks bad and confusing, and it rarely appears in professional
mathematics typesetting.
```

### Accept answers

```
After you ask a question here, if you get an acceptable answer, please
[consider "accept" the answer](//math.meta.stackexchange.com/a/4945/290189) by
clicking the check mark $\checkmark$ next to it. This scores points for you and
for the person who answered your question. You can find out more about accepting
answers here:
[How do I accept an answer?](//meta.math.stackexchange.com/questions/3286/),
[Why should we accept answers?](//meta.math.stackexchange.com/questions/3399/),
[What should I do if someone answers my question?](//math.stackexchange.com/help/someone-answers).
```

### Notify question writer for a $\LaTeX$ edit

```
[Welcome to Math.SE!](//math.meta.stackexchange.com/a/8588/290189) I have
tried to improve the readability of your question by introducing
[$\rm \LaTeX$](//math.meta.stackexchange.com/q/5020/290189). It is possible
that I unintentionally changed the meaning of your question. Please
proofread the question to ensure this has not happened.
```

### Wrong tags

Some commonly misused tags.

#### Probability Theory

```
[Probability theory](//en.wikipedia.org/wiki/Probability_theory) is
[about the measure-theoretic foundations](//math.meta.stackexchange.com/a/8587/290189)
of stochastics. The tag ([tag:probability-theory]) should be used for
questions concerning this subject, not for questions about calculating a
specific probability. Use ([tag:probability]) instead, see also
[meta](//math.meta.stackexchange.com/q/1686/290189).
```

#### Functional Analysis

```
The tag ([tag:functional-analysis]) is
[intended for questions about infinite dimensional vector spaces](//math.meta.stackexchange.com/a/8587/290189),
there is a separate tag for ([tag:functional-equations]); see the
[tag-wiki](https://math.stackexchange.com/tags/functional-analysis/info) and
the tag-excerpt. (The tag-excerpt is also shown when you are adding a tag to
a question.)
```

#### Algebraic Geometry

```
The tag ([tag:algebraic-geometry]) is
[intended for questions in a branch of mathematics called algebraic geometry](//math.meta.stackexchange.com/a/8587/290189)
(see the [tag-wiki](https://math.stackexchange.com/tags/algebraic-geometry/info).)
The tags ([tag:algebra-precalculus]) and/or ([tag:geometry]) should be used
for basic problems that involve both algebra and geometry.
```