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big cartesian productLaTeX Forum: GeneralAdd tags
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Hey everybody!
I want to illustrate a big cartesian product of sets. Is there a big version of the \times symbol for which indexes can be used? I don't want to use the \prod symbol, because in my math lectures we always use the cross symbol. Can somebody help me? Hornisse
Hi Hornisse,
welcome to the board! The ifsym package provides the symbols \Cross, \BigCross and \Smallcross, perhaps they would be useful for you. Stefan LaTeX Community Administrator
Hey Stefan,
Thank you for your quick answer! Obviously I'm not an expert using LaTeX... Can you tell me how to download the ifsym package, respectively where I have to safe it? I tried it in the font folder, but it didn't work. The cross symbols you mentioned seem to be exactly what I need. Hornisse
Hi Hornisse,
which LaTeX distribution do you use? Some distributions like MiKTeX and TeX Live offer a package management tool for the installation, so you don't need to install it manually. Btw. now I'm away for some time and can give other answers in about 2 hours, but perhaps other users would provide additional help. Stefan LaTeX Community Administrator
Hey!
I've just found out, that the package ifsym has already been installed. I checked it in the MikTex Package Manager. I also load the package in the pramble by \usepackage {ifsym}. Nevertheless the commands \Cross and \BigCross don't work. Do you have any idea why? Hornisse
Just set the geometry option according to the documentation:
Stefan LaTeX Community Administrator
Hey!
At last I've been able to use the ifsym package. Unfortunately, as the symbols are geometric ones, I can't use them as mathematical ones, i.e. I can't add indexes exactly below und over the symbol. Any other ides where to get such a cross symbol? I thought that this should be a standard symbol... Crosses within a circle are actually used to indicate product-sigma-algebras. I definately need one without circle Hornisse
Perhaps you will find an appropriate symbol in "The Comprehensive LaTeX Symbol List". It lists nearly 5000 symbols and may contain what you are searching for.
Best regards Thorsten¹ LaTeX Community Moderator
How to make a "Minimal Example" Board Rules Avoidable Mistakes ¹ System: openSUSE 13.1 (Linux 3.11.10), TeX Live 2013 (vanilla), TeXworks 0.5 (r1351) ² Posting stopped indefinitely due to offenses
This is my first post, so please forgive me if I don't follow standard conventions.
I don't like using symbols from other packages because they modify the standard AMS symbols. An alternative is to define the command yourself and then use it as needed. I use the standard \times command, and simply declare it to be a math-operator so that you can have the proper superscripts and subscripts.
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