TeXworks ⇒ How to debug this code?

[yaozhao]

Code: Select all

Part a)  zero conditional mean assumption，$E(S|\epsilon=0)$

I want to type E(S|epsilon=0).

Many thanks in advance!

[Johannes_B]

And where exactly is the problem? I think you are looking for \mid.

Code: Select all

\documentclass{article}
\begin{document}
Part a)  zero conditional mean assumption，, $E(S\mid \epsilon=0)$
\end{document}

Beware the difference between the comma as found on a regular keyboard and what you typed in. -> Unicode Character 'FULLWIDTH COMMA' (U+FF0C)

[yaozhao]

Q1: I know where the problem is. | should be coded as \mid. What's the difference? I can also type | usually in TeXworks.

Q2: Another problem is that yesterday you told me the tilde in LaTeX is an unbreakable space. Thus, I tried to use this idea in my code:

Code: Select all

multiple linear regression model $S_i = \alpha + \beta_1~Aid_i + \beta_2 inc_i + \beta_3 sts_i + \epsilon_i $

Conversely, adding a tilde will cause a space. If I just enter a space keyboard like other coefficients, then there is no space. Why is that?

[Johannes_B]

See https://tex.stackexchange.com/questions ... rt-divides for the first question. What you need depends on the math you are doing.

To the second question: There are no spaces in math mode as far as TeX is concerned. If you want a space, you need to use a special command depending on the amount of space you need. What you have as Aid in your code is typed out as A times i times d, a sequence of factors. If Aid is the word Aid (i.e. help or assistence), you need to use something else.