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How to write the set of quaternion numbers in Latex !
In old books, classic mathematical number sets are marked in bold as follows
$\mathbf{H}$ is the set of quaternion numbers.
So we use the \ mathbf command. Which give:
$\mathbf{H}$ is the set of quaternion numbers.
You will have noticed that in recent books, we use a font that is based on double bars, this notation is actually derived from the writing of classic sets on the blackboard: indeed, on the blackboard we do not fill these sets, or it would take a ton of chalk !!! In Latex, we use the amsfonts package
In the preamble we have:
\usepackage{amsfonts}
and \mathbb command
$\mathbb{H}$ is the set of quaternion numbers.
$\mathbb{H}$ is the set of quaternion numbers.