# Double Line in LaTeX

• LaTeX
Bachelier
What is double line in ##LaTex?## I tried ##"//"## twice, but the compiler does not accept it.

The old ##" /linebreak[2] "## command does not work neither?

Thanks

Homework Helper
MHB
What is double line in ##LaTex?## I tried ##"//"## twice, but the compiler does not accept it.

The old ##" /linebreak[2] "## command does not work neither?

Thanks

Hi Bachelier!

Which double line do you mean in ##\LaTeX##?
Is it:
Code:
||   //   \backslash\backslash   \lVert   or   \parallel
These render as:
$$\quad || \quad // \quad \backslash\backslash \quad \lVert \quad \text{ or }\quad \parallel$$

In latex you can use \\ for a linebreak, although on this site it only works in a \begin{something} environment.
For instance:
Code:
\begin{aligned} a = b+1 \\ c = b-1 \end{aligned}
which renders as:
\begin{aligned} a = b+1 \\ c = b-1 \end{aligned}

Bachelier
Forgot to add the word "break" in my title. sorry.

Yeah I meant: "Doubleline breaks and more line breaks" to control the structure of one's document.

Thank you

Bachelier
You have to use "\\" and not "//" if you want a linebreak.
See here: http://www.personal.ceu.hu/tex/breaking.htm

That is what I meant. I was using "\\" but my compiler did not take it.
However the funny thing is that after rebooting my machine, now "\\" works for as many line breaks as I want.

Thanks for that doc. I tried "\\" but it just seems to give me a line break. It does not start a new paragraph like the website claims. \\* gives the same result.

Bachelier
Hi Bachelier!

On a different note my friends, to get line breaks (like 3 or 4) for styling the ##\LaTeX## document, is it a good modus operandi to use "\\" and "\\*"?

Homework Helper
Thanks for that doc. I tried "\\" but it just seems to give me a line break. It does not start a new paragraph like the website claims. \\* gives the same result.
The website is wrong. (Given the .hu, maybe it lost something in translation from hungarian to english). The whole point of \\ is that it DOESN'T start a new paragraph (and therefore you don't get paragraph indentation, automatic extra space adjustment between paragraphs, etc).

On a different note my friends, to get line breaks (like 3 or 4) for styling the ##\LaTeX## document, is it a good modus operandi to use "\\" and "\\*"?

Probably not. I'm surprised several \\ in succession works at all. Actually I just tried it and it did work, but gave an "underfull hbox" warning. I expected to get an error message like "There's no line here to end" or something similar.

If you want one big gap, do \\[24pt] or whatever size you need.

Or better, use \bigskip \medskip or \smallskip. Those vertical spaces are "stretchy" so they adjust a bit to fill up the page correctly/ They also disappear if they happen to be at the end of a page, which is probably what you wanted.

Bachelier
Or better, use \bigskip \medskip or \smallskip. Those vertical spaces are "stretchy" so they adjust a bit to fill up the page correctly/ They also disappear if they happen to be at the end of a page, which is probably what you wanted.

Thank you ##|\mathbb{Z}_{>0}|##

BTW, what is your favorite command for paragraph breaks (i.e. to begin new paragraphs in the document)?