Math & Science ⇒ Italics after mathematical symbol

[JayZeeGP]

Hello everyone.
First of all I'd like to say sorry if my English is not perfect, I am Spanish.
I am using Kile in a Fedora distribution (also tried it in Kubuntu).
My problem is the following, whenever I use a mathematical symbol, the text after it just appears to be in italics and inserted in the same line until the paragraph ends without respecting the end of line and the paragraph sizes.

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\subsubsection{Descripción matemática de un qubit}
  Es un vector de módulo unidad en un espacio vectorial complejo bidimensional.
Los dos estados básicos de 
un qubit son |0\rangle (ket cero) y |1\rangle (ket uno),
que corresponden al 0 y al 1 del bit...

output.png (31.32 KiB) Viewed 12524 times

I hope you can help me, thanks a lot

[Stefan Kottwitz]

Hi,

welcome to the board!

You need to use math mode for mathematical symbols, such as by enclosing formulas in \( ... \) or $ ... $.

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... un qubit son $|0\rangle$ (ket cero) y $|1\rangle$ (ket uno)

Stefan

[JayZeeGP]

Thanks a lot. I am so sorry for asking such a silly doubt... I swear I searched everywhere but I just didn't know it worked like that. It looks just fine now

[Juanjo]

Just a suggestion: it seems that you are using quite frequently the notation |symbol>. So it is useful to define a command for this. Assuming that you have loaded the amsmath package, let:

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\newcommand{\ket}[1]{\ensuremath{\lvert#1\rangle}}

Now you can simply write

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Los dos estados b\'asicos de un qubit son \ket{0} (ket cero) y \ket{1} (ket uno)

to get the desired output.