## Introducing LaTeX Math Typesetting

Nope. It seems to make no difference whether I format it using {array}{cc} or {array}{11} or {equation*}{split}, \mbox{...} or \text{...]. For example:

To accomplish this, the formula will be built up from 3 types of variables, specifically:
$$\begin{array}{11}\mbox{Variable} & \mbox{Meaning}\\ Q[i,k] &\mbox{At time i, M is in state q_k}\\ H[i,j] &\mbox{At time i, the read-write head}\\ &\mbox{ is scanning tape square j}\\ S[i,j,k] &\mbox{At time i, the contents of}\\ &\mbox{tape square j is symbol s_k}\end{array}$$

 Recognitions: Gold Member Science Advisor It's not a 1 it's an 'l' and you need one for each row: edited to add: hmm I can't see anything wrong with this perhaps it's just too big.
 (I think it's just any series of characters {xxx}, {111}, {iii}, whatever, not some particular one; and isn't it one for each COLUMN, not row?) Edited to remove my witty(?) remark about the part of your post that you deleted.
 Recognitions: Gold Member Science Advisor No, it's one for each row and 'c' is for centre 'l' is for left I guess. edited to add: actually you're right but {ll}, {cc} or {rr} is the justifcation.
 Recognitions: Gold Member Science Advisor This one works and it's simlair: $$\begin{array}{lr}\mbox{yoink}&\mbox{double-yoink}\\G[i,j]&\mbox{yes}\\H[k,l] &\mbox{no}\\&\mbox{what?}\end{array}$$ I reckon then it must be thta it's just too big as there's a limit to the size of the code.
 Good find!! That should be helpful.
 That's it!!!!!!!! $$\begin{array}{ll}\mbox{Variable} & \mbox{Meaning}\\ Q[i,k] &\mbox{At time i, M is in state}\, q_k\\ H[i,j] &\mbox{At time i, the read-write head}\\ &\mbox{is scanning tape square j}\\ S[i,j,k] &\mbox{At time i, the contents of}\\ &\mbox{tape square j is symbol}\, s_k\end{array}$$ $$\mbox{testing another sub_sc_rip_t}$$ Building on jcsd's find: the charaters in the brackets after {array} must be {lll} (that lower-case L's) to left-align {rrr} to right-align {"any characters"} to center the text in each column (one char for each column) Also: apparently subscript like q_k can't be used in \mbox in an array, although it can be used in \mbox when it's not part of an array. Now I can get back to my "real" post. Thanks.
 Blog Entries: 12 Wick Contraction- http://www.fzu.cz/~kolorenc/tex.php This website has 2 or 3 possible implementations for Wick Contractions in QFT. I have not tried any, but will let you know how they work!
 Hi everybody, Does anyone know how do I write a vector quantity, such as an F with an arrow up? I'm not so skilled in Latex. Thanks
 Recognitions: Gold Member Science Advisor \vec{F} $$\vec{F}$$
 OK, let me try once. $$\sum\vec{F}_e_x_t = M\vec{a}_c_m$$
 Thanks jcsd!
 How do I create the 'inverse' symbol?
 Like $$cos\theta^{-1}$$?
 Recognitions: Gold Member Science Advisor inverse is just ^{-1}, so the (muplicative) inverse of a is a^{-1}, for an inverse function like cos you want \cos^{-1}\theta
 $$\begin{array}P=A(1+\frac{r}{100})^n \\ \sqrt[n]{\frac{P}{A}}=\frac{r+100}{100} \\ r=100\sqrt[n]{\frac{P}{A}}-100\end{array}$$

Blog Entries: 12
 Quote by Norman Wick Contraction- http://www.fzu.cz/~kolorenc/tex.php This website has 2 or 3 possible implementations for Wick Contractions in QFT. I have not tried any, but will let you know how they work!
The simple_wick.tex file works very well. I could not get the other one to work. I also did not have any of the problems the author gives for simple_wick.tex.

Cheers