### math

#### 226,058 subscribers a community for 9 years, 6 months

last post 8 days ago [+]

**Welcome to /r/math.**

This subreddit is for discussion of mathematical links and questions. **Please read the FAQ before posting.**

Homework problems, practice problems, and similar questions should be directed to /r/learnmath, /r/homeworkhelp or /r/cheatatmathhomework. Do not **ask or answer** this type of question in /r/math.

If you're asking for help learning/understanding something mathematical, post in the *Simple Questions* thread or /r/learnmath. **This includes reference requests** - also see our lists of recommended books and free online resources.

If you are asking for a calculation to be made, please post to /r/askmath or /r/learnmath.

If you are asking for advice on choosing classes or career prospects, please post in the stickied Career & Education Questions thread.

Image-only posts should be on-topic and should promote discussion; **please do not post memes or similar content here**. Please be polite and civil when commenting, and always follow reddiquette.

All posts and comments should be directly related to mathematics. **General political debate is not permitted**.

Filters: Hide Image Posts Show All Posts

**Recurring Threads and Resources**

*Everything about X* - every Wednesday

*What Are You Working On?* - posted Mondays

*Career and Education Q&A* - Every other Thursday

*Simple Questions* - Posted Fridays

*A Compilation of Free, Online Math Resources*.

*Click here to chat with us on IRC!*

**Using LaTeX**

To view LaTeX on reddit, install *one* of the following:

MathJax userscript (install Greasemonkey or Tampermonkey first)

`[; e^{\pi i} + 1 = 0 ;]`

Post the equation above like this:

`[*;* e\^{\pi i}+1=0 *;*]`

You may need to add four spaces before or put backticks around math fragments.

**Using Superscripts and Subscripts**

x*_sub_* makes x*sub*

x*`sup`* and x\^(sup) both make x^(sup)

x*_sub_`sup`* makes x*sub*`sup`

x*`sup`_sub_* makes x`sup`

*sub*

**Other Subreddits**

**Math**

- /r/learnmath
- /r/mathbooks
- /r/cheatatmathhomework
- /r/matheducation
- /r/casualmath
- /r/puremathematics
- /r/mathpics
- /r/mathriddles

**Tools**

- /r/mathematica
- /r/matlab
- /r/sagemath

**Related fields**

- /r/actuary
- /r/algorithms
- /r/compsci
- /r/interdisciplinary
- /r/statistics