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Thanks Thorsten, that was exactly what i needed!

Hello,

I'm transcribing a lecture and the instructors notation for complex numbers is the following:

|0> for c=a +bi and <0| for c*=a-bi

when trying to typeset these in LaTeX there is an unwelcome spacing around the "<" and ">". How can I get rid of it? I didn't find any other way of expressing ...

Hello, I'm having problems adjusting the font size for \sum and \int.
\documentclass[a4paper,DIV12,13pt,headsepline,largeheadings]{scrartcl}
\pagestyle{headings}
\usepackage[applemac]{inputenc}
\usepackage{lmodern}
\usepackage[ngerman]{babel}
\usepackage[intlimits, sumlimits]{mathtools}
\usepackage ...