15 questions linked to/from How to typeset $:=$ correctly?
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### Symbol for definition := [duplicate]

Sometimes the symbol := is used to denote a definition. For example, X:=Y+Z means that X is defined to be Y+Z. When using LaTeX, can I just use $:=$, or do I need to do something special?
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### Alternate “colon equals” sign [duplicate]

Possible Duplicate: How to typeset $:=$ correctly? One of the first math books I read used "A := B" to mean "A is defined to be B". In the font used in that book, the upper dot of the colon was ...
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### Definitions in math formulas [duplicate]

I want to have definitions like $x :=1$ in my tex to look good, and to be really different from a statement of equality like $x = 1$. However, the $:$ and $=$ are not alligned, and this looks ugly. ...
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### What is the right way to typeset “define”? [duplicate]

One often uses x:=t which reads "x is defined to be t". What is the right way to typeset this in LaTeX? Is it simply $$x := t$$? I tried to google it around but couldn't find anything (probably ...
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### Typesetting the “define equals” symbol

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### Most Efficient Way of Creating Left Aligned Item/Equation List

What is the best way to achieve a list where items are seamlessly aligned either left, centered, or right. I am more so interested in the items being left aligned, (for instance a series or (system) ...
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### Exchange meaning of : and \colon

I usually use the colon symbol : to denote maps. For set syntax there is the braket package. So as the spacing of : is not appropriate, I want it to behave like \colon. I tried \documentclass{article}...
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### What is the purpose of : in math mode?

What is the purpose of $:$? We know that in math mode one should write in natural language and not being so strict with math notation. For example: $f:A\to B$ is not "correct", the correct way would ...
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### Align $:=$ with $=$ in align/split mode

I am writing a sequence of inequalities in math mode, where the first line defines the first object. To be clear, I have something like \documentclass[12pt]{amsart} \usepackage{amsfonts,graphics,...
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### Missing } inserted, yet braces are balanced

Regard the following document: \documentclass[a4paper,reqno]{amsart} \usepackage{amssymb,amsmath,amsthm,fullpage} \begin{document} For each $k$ we denote by $\lambda_k$ the $k$th symmetric ...
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### Positioning of equations

I am trying to position my equations as in the image below, but I cant seem to get it to work (mainly because I cant get the line breaks to work). How would I position my equation like in the image ...
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### Typesetting displayed equivalences and definitions of unequal length

What is the proper way to typeset in LaTeX, in display-mode, a series of equivalences and definitions of unequal lengths of sets ? Consider for this the following code that I used for a series of ...